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WORKSHEET - ANOVA ASSIGNMENT

ENTER NAME HERE--->				0
When you submit your work, will you include a histogram of QUIZ3?
Please select a choice	1			0
When you submit your work, will you include a descriptive statistics table for QUIZ3 (collapsed across the 3 sections)?
Please select a choice	1			0
When you submit your work, will you include the SPSS output for the Shapiro-Wilk test?
Please select a choice				0
When you submit your work, will you include the SPSS output for the Levene test?
Please select a choice				0
When you submit your work, will you include the SPSS output for the means plot?
Please select a choice				0
When you submit your work, will you include a descriptive statistics table for QUIZ3, broken down by section?
Please select a choice				0
When you submit your work, will you include the SPSS output for the results of the ANOVA test?
Please select a choice				0
When you submit your work, will you include the SPSS output for multiple comparisons (Tukey test)?
Please select a choice				0
Variable	What kind of Variable Is This?		What is the Scale of the Variable?
SECTIONS =	Please select a choice		Please select a choice	0	0
QUIZ3 =	Please select a choice		Please select a choice	0	0
What is the overall sample size?	Please select a choice			0
Assumptions	Select 'Yes' for each assumption that needs to be satisfied when conducting a One-Way Anova		Select 'Yes' for each assumption that was satisfied in the data set you're working with IMPORTANT: For each assumption, only answer this if you selected "Yes" in the cell to the left. If you selected "No," the answer choice will go black in this column
Independence of observations	Please select a choice		Please select a choice	0	0
Outcome (or dependent) variable is quantitative and normally distributed	Please select a choice		Please select a choice	0	0
Homogeneity of variance	Please select a choice		Please select a choice	0	0
Variables are linearly related	Please select a choice		Please select a choice	0	0
The numbers look pretty in pink font	Please select a choice		Please select a choice	0	0
Presence of bivariate outliers	Please select a choice		Please select a choice	0	0
To evaluate these assumptions, please fill in the blanks with the results of the following tests:
Shapiro-Wilk Test, Statistic =		<-------- Use THREE decimal places		0
Shapiro-Wilk Test, p-value =		<-------- Use THREE decimal places		0
Levene's Test, Statistic (F-value) =		<-------- Use THREE decimal places		0
Levene's Test, p-value =		<-------- Use THREE decimal places		0
Articulate a research question relevant to the statistical test	Please select a choice	0		0
Articulate the null hypothesis	Please select a choice	0		0
Articulate the alternative hypothesis	Please select a choice	0		0
Specify the alpha level	Please select a choice	0		0
ANOVA: Fill in the blanks to report means and standard deviations for each level of the factor in the ANOVA.
	Mean		Standard Deviation
Section 1				0	0
Section 2				0	0
Section 3				0	0
Fill in the blanks to report the results from the ANOVA you conducted.
Degrees of freedom, Between-Groups =				0
Degrees of freedom, Within-Groups =				0
F-value =				0
p-value =				0
effect size (eta2) =				0
For the next 2 questions, please select from the drop-down box.
Based on the results of the ANOVA, should the null hypothesis be rejected?	Please select a choice			0
Based on the results of the ANOVA, should the post-hoc test (Tukey HSD) be performed?	Please select a choice			0
If you decide to conduct the Tukey HSD post-hoc test, please report your results here (fill in the blanks and use a drop-down menu):
	Section 1 vs. Section 2
Mean difference =				0
p-level =				0
Is the comparison significant?	Please select a choice			0
	Section 1 vs. Section 3
Mean difference =				0
p-level =				0
Is the comparison significant?	Please select a choice			0
	Section 2 vs. Section 3
Mean difference =				0
p-level =				0
Is the comparison significant?	Please select a choice			0
What is the main strength of a one-way ANOVA?
Please select a choice				0
What is the main limitation of a one-way ANOVA?
Please select a choice				0

Ready to begin? So far, no questions have been answered.

SPECIAL REQUIRED WORKSHEET FOR ASSIGNMENT ON ANOVA This worksheet is absolutely positively required. Why? It compels you to engage with each question and will guide your efforts on the long-form Word doc part of the assignment. What's in it for you? Points. Lots of them. Remember: This worksheet is required but does not replace your fully-written DAA (Word doc). You must submit BOTH.

First things first... You are required to show your SPSS output when you submit your assignment. Please indicate whether you intend to do so.

Section 1 - DATA CONTEXT: In this section, you'll be making choices from drop-down menus.

Section 2 - TESTING ASSUMPTIONS: In this section, you'll be using drop-down menus to choose 'yes' or 'no'

Section 3 - Research Question, Hypotheses, Alpha Level: In this section, you'll be using drop-down menus

Section 4 - Interpretation: In this section, you'll be using drop-down menus and filling in the blanks

Section 5 - Conclusion: In this section, you'll be using drop-down menus

Sections is supposed to be what? It's a variable that represents the different sections of a class, right? As such, even if those sections are numbered, this is a variable where those numbers are just labels -- they're just arbitrary words. If that's true, then this is what kind of a variable?

Quiz3 is a variable representing meaningful NUMBERS. So, what kind of variable could this one be?

Want to hear something weird? Turns out that even if the DV were not normally distributed, we could still do a one-way ANOVA. Hmmm.... Could this be a hint about the second assumption below?

All the numbers here (Shapiro-Wilk and Levene) come right off SPSS output.

Think about what variables we're focused on. That alone should help you frame this up.

Remember that this is not the same thing as the p-value but we will end up comparing them at some point.

All of this stuff comes right out of the SPSS output. Right out! No calculations.

Hint: Down below, I'm asking for the results of this test. So, uh, should the test be performed? Um, well...

To calculate effect size (eta squared), use the formula to the right.

You'll find Sum of Squares (SS) for between-groups and total, on your SPSS output.

You could easily google the strengths and limitations of a one-way ANOVA. You'll also find them in your materials. Either way, you're all set.

This all comes out of your post hoc test SPSS output. In your DAA, please explain what all this is. It's not enough just to list a bunch of numbers.

OUTPUT

SCORING

great job on DAA

First off, you did a great job of working through the DAA. You’ve produced a compelling narrative that stands on its own, about an exercise in one-way ANOVA. This DAA demonstrates real engagement with the concepts. When I read your DAA, I can SEE the learning you did. This is well done, indeed.

17%

ENTER NAME HERE--->

okay job - hit all the basics

First off, let me say this: You did a fine job across the DAA. You hit the essential points concisely and I have no doubt you worked hard on this. Still, a bit more clarification and elaboration would have helped demonstrate your mastery. The other advantage to additional explanation if that if you produce an incorrect answer, the elaboration can showcase your reasoning which, if correct, could win you extra points.

Please select a choice

okay job with effort

First off, let me say this: Your DAA made me proud. Did you have a firm grasp of ALL the concepts and materials? No. But did you try really, sincerely, and truly hard to grasp those concepts and show me you were trying? Oh yeah! Wow – you gave this a LOT of effort. Some of it came together well and some of it could use some additional work, some clarification and elaboration.

Rubric #

RAW SCORE

WEIGHTED

Yes

not so good job

First off, you invested some effort in developing this DAA. That’s a good start. Getting beyond that start is the key, of course, but we’ve got to start from a platform of making an attempt to get this right, and that platform can be found for sure in this DAA. Where are the gaps? I would say that all of the gaps fall into a few big buckets: (1) Your representation of the concepts wasn’t always consistent with the materials; (2) You didn’t provide a whole lot of explanation, clarification, and elaboration; (3) You didn’t address all of the requirements. Note that I don't have the discretion to overlook those things. Those things are required by the rubric. I did my best to get you the best outcome but the rubric ultimately has the last word.

20%

Please select a choice

writing and grammar

One (other) note about the DAA: Some of the concepts were probably a lot more accurate in your mind than they appeared on your paper. No, I can’t read your mind or anything – I’m not saying that. I’m just saying that when I read your DAA, I get the sense that you had a much firmer grasp of the concepts than your writing would have me to believe. For one thing, some of what you’re saying isn’t entirely clear. With some clarification and elaboration, it could definitely get there but right now, I’m not sure whether you really grasped the concepts or whether you’re kind of talking around them, so to speak. The other thing you should definitely consider is working on the proofreading. I found a number of grammar problems.

10%

Predictor variable

25%

20%

Please select a choice

Outcome variable

10%

Nominal

Moderator variable

20%

Ratio

Mediator variable

10%

Interval

100%

10%

Continuous

Please select a choice

Ellipticular

Are there significant differences between Quiz 3 grades among the 3 sections?

Are there significant differences between Quiz 3 grades among men and women?

Detailed Comments on Your Assignment:

What is the relationship between socioeconomic status and Quiz 3 grades?

Hi, Super-amazing job!!! Wow!!! What an accomplishment! This is the best kind of proof that hard work and determination pay off. This was not an easy assignment. It pretends to be about one-way ANOVAs but it's about a whole lot more. Everything you've learned appears in this assignment and it challenges learners to bring all the concepts and techniques together. So, what I was looking for here is how well you were able to do that, and from what I can tell, you did that REALLY well! Here are my comments: First off, you did a great job of working through the DAA. You’ve produced a compelling narrative that stands on its own, about an exercise in one-way ANOVA. This DAA demonstrates real engagement with the concepts. When I read your DAA, I can SEE the learning you did. This is well done, indeed. Section 2 of the Rubric: This one asked you all the standard stuff about the variables you're using in this analysis. Why is this important? We've got to know what we're examining when we do a research study, and how we would go about measuring those things. More than one thing went wrong here if I'm reading your worksheet and full-length paper correctly. Just so you know, Sections 3 should be a nominal predictor variable, while Quiz3 should be a ratio outcome variable, with the sample size equal to 105. I'd check to see specifically where things got a little derailed in this part of the assignment, and then consult the course materials as needed to nail this down. You'll need these skills as you continue along in your academic journey, so it's worth buttoning them up now. Section 3 of the Rubric: You may be thinking, "Why do I have to wrestle with these assumptions again? I already went through this with the t-test assignment." Well, if you recognized that the assumptions of an ANOVA are the same as those for a t-test, then you are right! You did go through this already. But it's important that we consider these with respect to ANOVAs. I noticed more than 2 problems in the assumptions part of the assignment. Here's how that section should have looked: When asked to indicate which assumptions need to be satisfied to conduct an ANOVA, the correct answers were independence of observations, outcome (or dependent) variable is quantitative and normally distributed, and homogeneity of variables. Everything else didn't have to be satisfied. When asked to evaluate whether or not these assumptions had been satisfied in the data set with which you were working, the answer is yes for everything except the one saying that the DV has to be quantitative and normally distributed. As for the Shapiro-Wilk test and Levene's test, 3 of the items did not appear to be right. You may want to go back to the course materials and see what happened. Section 4 of the Rubric: This is an area where we've all had a good chance to practice during the course. Hypothesis testing is core to what we do as researchers. Even if we don't intend to do any research beyond our experience at Capella, this sort of training will make us better critical thinkers, which is certainly useful across professions. I could see from your assignment submissions that you made at least one error here. I'd revisit the course materials and get some more practice with the conceptual framework underlying hypothesis testing. Section 5: The previous sections were mostly aimed at seeing whether you understood the basic principles of ANOVAs. This section is focused on evaluating how well you can actually do one. As it turns out, you may need to do some work in this area because I detected a bunch of errors in your reporting of means and standard deviations. It could be that something went wrong when you attempted to generate the output or it could be something conceptual. Either way, it's worth taking a few steps back and retracing your steps. Now I did see some errors in your reporting of the statistics that are at the core of this assignment, namely, the ones that help us understand the results of the ANOVA you conducted. Specifically, I could see the following items aren't consistent with what you were supposed to be reporting: Between-Groups Degrees of Freedom, Within-Groups Degrees of Freedom, F-value, effect size (eta2). Let's turn now to the interpretive piece. Based on your ANOVA results, the null hypothesis should indeed be rejected and the post-hoc test should be performed. At least one of your answers differed from this so I think it's worth diving back into the ANOVA material and getting a sense of how to interpret your ANOVA findings. Finally, in the section asking you to report the results of your Tukey HSD test, over a third of the items were incorrect. The specific items include the following: Section 1 vs. Section 2 - Mean difference, p-level, determination of whether the comparison was significant; Section 1 vs. Section 3 - Mean difference, p-level, determination of whether the comparison was significant; Section 2 vs. Section 3 - Mean difference, determination of whether the comparison was significant; . Section 6: Here you had to address strengths and limitations. You scored at least one wrong here so I would check out how this happened and make sure you've got a lock on it. Thanks for all the amazing hard work and dedication over the quarter. -Dr. Reynolds

Does age correlate with Quiz 3 grades for the 3 sections?

When you submit your work, will you include a histogram of QUIZ3?

Please select a choice

There is no difference between Quiz 3 grades in the 3 sections.

There is no difference between grades received on quiz3 based on one's gender.

When you submit your work, will you include a descriptive statistics table for QUIZ3 (collapsed across the 3 sections)?

SES has no impact on grades received for quiz3.

Please select a choice

AMAZING

Wow!!! Just wow!!!! You did an amazing job through and through. I give out very few 100s on this assignment. Why? Well, you'd have to have gotten everything (or almost everything) right and shown that you understand why you got everything right. It doesn't happen very often. A lot of learners have a good deal of difficulty with this assignment. And then your DAA (and worksheet) come along, demonstrating the conceptual mastery necessary for you to proclaim victory far and wide. I was honestly super-impressed with your DAA. Not only did it make well-supported arguments demonstrating understanding, but it also explored those concepts in a way that speaks very highly of your command of the work for this unit. As an example, your Interpretation section made it clear that you'd grappled with what we can learn from a one-way ANOVA. REALLY WELL DONE! CONGRATULATIONS ON A SUPER-AMAZING ACHIEVEMENT! -Dr. Reynolds

There is a difference between the grades received on quiz3 in the 3 sections.

There is a difference between the grades received on quiz3 in 3 sections.

Great job

Please select a choice

When you submit your work, will you include the SPSS output for the Shapiro-Wilk test?

Great effort

Hi, Great job, overall! This was not an easy assignment. It pretends to be about one-way ANOVAs but it's about a whole lot more. Everything you've learned appears in this assignment and it challenges learners to bring all the concepts and techniques together. So, what I'm looking for here is how well you were able to do that. While that may seem like an overwhelming challenge, it's actually good. It means that if I saw you were able to grasp hypothesis testing, for example, but not post-hoc testing, I made sure you were rewarded for what you had indeed grasped. And you were rewarded. You'll see sections of this assignment where maybe you didn't do as well as you'd hoped (in terms of the # of answers marked incorrect), but where you nonetheless scored way better on the rubric than would have been otherwise justified. Here are some additional comments:

105

Please select a choice

Good effort

Hi, This was not an easy assignment. It pretends to be about one-way ANOVAs but it's about a whole lot more. Everything you've learned appears in this assignment and it challenges learners to bring all the concepts and techniques together. So, what I'm looking for here is how well you were able to do that. While that may seem like an overwhelming challenge, it's actually good. It means that if I saw you were able to grasp hypothesis testing, for example, but not post-hoc testing, I made sure you were rewarded for what you had indeed grasped. And you were rewarded. You'll see sections of this assignment where maybe you didn't do as well as you'd hoped (in terms of the # of answers marked incorrect), but where you nonetheless scored way better on the rubric than would have been otherwise justified. Here are some more comments:

There is a difference between Quiz 3 grades in the 3 sections.

420

There is a difference between grades received on quiz3 based on one's gender.

When you submit your work, will you include the SPSS output for the Levene test?

Thanks for all the amazing hard work and dedication over the quarter. -Dr. Reynolds

Unknown

SES has an impact on grades received for quiz3.

Please select a choice

There is no difference between the grades received on quiz3 in the 3 sections.

When you submit your work, will you include the SPSS output for the means plot?

Please select a choice

Yes

It allows for comparison of more than 2 groups in one test, avoiding increased risk of Type I error.

It allows for comparison between 2 groups only.

When you submit your work, will you include a descriptive statistics table for QUIZ3, broken down by section?

Not Applicable

It allows for multiple changes in research design after the study has commenced.

Please select a choice

It allows for green kryptonite resistance (but not red).

When you submit your work, will you include the SPSS output for the results of the ANOVA test?

Please select a choice

Does the previous GPA correlate with the number of correct final exam scores?

A statistically significant result does not tell us which groups show statistically significant differences.

When you submit your work, will you include the SPSS output for multiple comparisons (Tukey test)?

Does gender correlate with previous GPA?

A statistically significant result indicates that the study was not conducted properly.

Please select a choice

sec2

You did pretty well on this. I only saw one error here. Just so you know, Sections 3 should be a nominal predictor variable, while Quiz3 should be a ratio outcome variable. The sample size should be 105.

More than one thing went wrong here if I'm reading your worksheet and full-length paper correctly. Just so you know, Sections 3 should be a nominal predictor variable, while Quiz3 should be a ratio outcome variable, with the sample size equal to 105. I'd check to see specifically where things got a little derailed in this part of the assignment, and then consult the course materials as needed to nail this down. You'll need these skills as you continue along in your academic journey, so it's worth buttoning them up now.

Section 2 of the Rubric: This one asked you all the standard stuff about the variables you're using in this analysis. Why is this important? We've got to know what we're examining when we do a research study, and how we would go about measuring those things. More than one thing went wrong here if I'm reading your worksheet and full-length paper correctly. Just so you know, Sections 3 should be a nominal predictor variable, while Quiz3 should be a ratio outcome variable, with the sample size equal to 105. I'd check to see specifically where things got a little derailed in this part of the assignment, and then consult the course materials as needed to nail this down. You'll need these skills as you continue along in your academic journey, so it's worth buttoning them up now.

Do the final exam scores correlate with the geographical areas?

A statistically significant result means a t-test should have been performed, not an ANOVA.

Does socioeconomic status correlate with the final exam scores?

It cannot provide the 1.21 jigowatts necessary for time travel.

sec3

You must have had a good handle on this section because I noticed only one or two problems. Here's how that section should have looked: When asked to indicate which assumptions need to be satisfied to conduct an ANOVA, the correct answers were independence of observations, outcome (or dependent) variable is quantitative and normally distributed, and homogeneity of variables. Everything else didn't have to be satisfied. When asked to evaluate whether or not these assumptions had been satisfied in the data set with which you were working, the answer is yes for everything except the one saying that the DV has to be quantitative and normally distributed.

I noticed more than 2 problems in the assumptions part of the assignment. Here's how that section should have looked: When asked to indicate which assumptions need to be satisfied to conduct an ANOVA, the correct answers were independence of observations, outcome (or dependent) variable is quantitative and normally distributed, and homogeneity of variables. Everything else didn't have to be satisfied. When asked to evaluate whether or not these assumptions had been satisfied in the data set with which you were working, the answer is yes for everything except the one saying that the DV has to be quantitative and normally distributed.

As for the Shapiro-Wilk test and Levene's test, 3 of the items did not appear to be right. You may want to go back to the course materials and see what happened.

Section 3 of the Rubric: You may be thinking, "Why do I have to wrestle with these assumptions again? I already went through this with the t-test assignment." Well, if you recognized that the assumptions of an ANOVA are the same as those for a t-test, then you are right! You did go through this already. But it's important that we consider these with respect to ANOVAs. I noticed more than 2 problems in the assumptions part of the assignment. Here's how that section should have looked: When asked to indicate which assumptions need to be satisfied to conduct an ANOVA, the correct answers were independence of observations, outcome (or dependent) variable is quantitative and normally distributed, and homogeneity of variables. Everything else didn't have to be satisfied. When asked to evaluate whether or not these assumptions had been satisfied in the data set with which you were working, the answer is yes for everything except the one saying that the DV has to be quantitative and normally distributed. As for the Shapiro-Wilk test and Levene's test, 3 of the items did not appear to be right. You may want to go back to the course materials and see what happened.

Please select a choice

nullhyp

sec4

I could see from your assignment submissions that you made at least one error here. I'd revisit the course materials and get some more practice with the conceptual framework underlying hypothesis testing.

Section 4 of the Rubric: This is an area where we've all had a good chance to practice during the course. Hypothesis testing is core to what we do as researchers. Even if we don't intend to do any research beyond our experience at Capella, this sort of training will make us better critical thinkers, which is certainly useful across professions. I could see from your assignment submissions that you made at least one error here. I'd revisit the course materials and get some more practice with the conceptual framework underlying hypothesis testing.

Previous GPA does not correlate with the number of correct final exam scores.

Gender does not correlate with the previous GPA.

The previous GPA correlates with the number of correct final exam scores.

sec5

Section 5: The previous sections were mostly aimed at seeing whether you understood the basic principles of ANOVAs. This section is focused on evaluating how well you can actually do one.

It looks as if you can! I see only one or two errors in your reporting of means and standard deviations.

As it turns out, you may need to do some work in this area because I detected a bunch of errors in your reporting of means and standard deviations. It could be that something went wrong when you attempted to generate the output or it could be something conceptual. Either way, it's worth taking a few steps back and retracing your steps.

Now I did see some errors in your reporting of the statistics that are at the core of this assignment, namely, the ones that help us understand the results of the ANOVA you conducted. Specifically, I could see the following items aren't consistent with what you were supposed to be reporting:

Between-Groups Degrees of Freedom, Within-Groups Degrees of Freedom, F-value, effect size (eta2).

Let's turn now to the interpretive piece. Based on your ANOVA results, the null hypothesis should indeed be rejected and the post-hoc test should be performed. At least one of your answers differed from this so I think it's worth diving back into the ANOVA material and getting a sense of how to interpret your ANOVA findings.

Finally, in the section asking you to report the results of your Tukey HSD test, only about a third of the items were incorrect. The specific items include the following:

Finally, in the section asking you to report the results of your Tukey HSD test, over a third of the items were incorrect. The specific items include the following:

Section 1 vs. Section 2 - Mean difference, p-level, determination of whether the comparison was significant; Section 1 vs. Section 3 - Mean difference, p-level, determination of whether the comparison was significant; Section 2 vs. Section 3 - Mean difference, determination of whether the comparison was significant;

Section 5: The previous sections were mostly aimed at seeing whether you understood the basic principles of ANOVAs. This section is focused on evaluating how well you can actually do one.

Finally, in the section asking you to report the results of your Tukey HSD test, over a third of the items were incorrect. The specific items include the following: Section 1 vs. Section 2 - Mean difference, p-level, determination of whether the comparison was significant; Section 1 vs. Section 3 - Mean difference, p-level, determination of whether the comparison was significant; Section 2 vs. Section 3 - Mean difference, determination of whether the comparison was significant; .

Section 5: The previous sections were mostly aimed at seeing whether you understood the basic principles of ANOVAs. This section is focused on evaluating how well you can actually do one. As it turns out, you may need to do some work in this area because I detected a bunch of errors in your reporting of means and standard deviations. It could be that something went wrong when you attempted to generate the output or it could be something conceptual. Either way, it's worth taking a few steps back and retracing your steps. Now I did see some errors in your reporting of the statistics that are at the core of this assignment, namely, the ones that help us understand the results of the ANOVA you conducted. Specifically, I could see the following items aren't consistent with what you were supposed to be reporting: Between-Groups Degrees of Freedom, Within-Groups Degrees of Freedom, F-value, effect size (eta2). Let's turn now to the interpretive piece. Based on your ANOVA results, the null hypothesis should indeed be rejected and the post-hoc test should be performed. At least one of your answers differed from this so I think it's worth diving back into the ANOVA material and getting a sense of how to interpret your ANOVA findings. Finally, in the section asking you to report the results of your Tukey HSD test, over a third of the items were incorrect. The specific items include the following: Section 1 vs. Section 2 - Mean difference, p-level, determination of whether the comparison was significant; Section 1 vs. Section 3 - Mean difference, p-level, determination of whether the comparison was significant; Section 2 vs. Section 3 - Mean difference, determination of whether the comparison was significant; .

Gender correlates with the previous GPA.

Please select a choice

althyp

sec 6

Section 6: Here you had to address strengths and limitations. You scored at least one wrong here so I would check out how this happened and make sure you've got a lock on it.

The previous GPA correlates with the number of correct final exam scores.

Select from drop-down menu boxes

Gender correlates with the previous GPA.

The previous GPA does not correlate with the number of correct final exam scores.

Variable

What kind of Variable Is This?

What is the Scale of the Variable?

SECTIONS =

Please select a choice

QUIZ3 =

Please select a choice

0.50

0.00

Please select a choice

0.05

Gender/GPA

0.50

What is the overall sample size?

Please select a choice

Gender/Final

0.90

Gender/Total

0.00

GPA/Final

GPA/Total

Final/Total

Please select a choice

Assumptions

Select 'Yes' for each assumption that needs to be satisfied when conducting a t-test

Select 'Yes' for each assumption that was satisfied in the data set you're working with

Gender/GPA

Independence of observations

Please select a choice

Yes

Gender/Final

Outcome (or dependent) variable is quantitative and normally distributed

Please select a choice

Yes

GPA/Final

Homogeneity of variance

Please select a choice

Yes

GPA/Total

Variables are linearly related

Please select a choice

Final/Total

The numbers look pretty in pink font

Please select a choice

Presence of bivariate outliers

Please select a choice

To evaluate these assumptions, please fill in the blanks with the results of the following tests:

Shapiro-Wilk Test Statistic

0.948

Shapiro-Wilk Test Statistic,

Shapiro-Wilk Test p-level

Levene's Test Statistic (F-value)

2.898

Levene's Test Statistic (F-value),

Levene's Test p-level

0.06

Levene's Test p-level,

Shapiro-Wilk Test Statistic, Levene's Test Statistic (F-value), Levene's Test p-level

Articulate a research question relevant to the statistical test

Please select a choice

Are there significant differences between Quiz 3 grades among the 3 sections?

Articulate the null hypothesis

Please select a choice

There is no difference between Quiz 3 grades in the 3 sections.

Articulate the alternative hypothesis

Please select a choice

There is a difference between Quiz 3 grades in the 3 sections.

Specify the alpha level

Please select a choice

0.05

mean

std

Section 1

0.00

7.27

1.153

Section 2

0.00

6.33

1.611

Section 3

0.00

7.94

1.56

Between-Groups Degrees of Freedom,

Within-Groups Degrees of Freedom,

102

Within-Groups Degrees of Freedom,

F-value,

0.000

10.951

F-value,

p-value,

0.000

effect size (eta2),

0.000

0.17676124

effect size (eta2),

Between-Groups Degrees of Freedom, Within-Groups Degrees of Freedom, F-value, effect size (eta2)

Based on the results of the ANOVA, should the hypothesis be rejected?

Please select a choice

Based on the results of the ANOVA, should the post-hoc test (Tukey HSD) be performed?

Please select a choice

The last section where you had to evaluate the strength and limitation of a t-test is another of those you-either-know-it,-or-you-don't kinds of situations.

One of your answers here is incorrect, so I would check out the material and see where things didn't go the way they should have.

Both of your answers were incorrect, so I'm not sure what happened here. You might just want to check out the course material and get this moving in the right direction again.

The last section where you had to evaluate the strength and limitation of a t-test is another of those you-either-know-it,-or-you-don't kinds of situations. Both of your answers were incorrect, so I'm not sure what happened here. You might just want to check out the course material and get this moving in the right direction again.

If you decide to conduct the Tukey HSD post-hoc test, please report your results here (fill in the blanks and use a drop-down menu):

Section 1 vs. Section 2

Section 1 vs. Section 2 -

Mean difference,

0.939

Mean difference,

p-level,

0.021

p-level,

determination of whether the comparison was significant,

Please select a choice

Yes

determination of whether the comparison was significant,

Section 1 vs. Section 2 - Mean difference, p-level, determination of whether the comparison was significant, ;

Section 1 vs. Section 3

Section 1 vs. Section 3 -

Mean difference,

-0.667

Mean difference,

p-level,

0.159

p-level,

determination of whether the comparison was significant,

Please select a choice

determination of whether the comparison was significant,

Section 1 vs. Section 3 - Mean difference, p-level, determination of whether the comparison was significant, ;

Section 2 vs. Section 3

Section 2 vs. Section 3 -

Mean difference,

-1.606

Mean difference,

Please select a choice

strongcorr

p-level,

Strong positive

determination of whether the comparison was significant,

Please select a choice

Yes

determination of whether the comparison was significant,

Strong negative

Section 2 vs. Section 3 - Mean difference, determination of whether the comparison was significant, ;

Weak negative

Weak positive

Please select a choice

evallp

It can evaluate whether there is a relationship between 2 variables.

It can evaluate whether one of the variables causes another variable.

It can evaluate whether the sample size needs to be larger.

What is the main strength of a one way anova

It can evaluate whether there is a relationship between homoscedacity and homogeneity.

Please select a choice

It allows for comparison of more than 2 groups in one test, avoiding increased risk of Type I error.

Please select a choice

astudio

What is the main limitation of a one way anova?

It cannot evaluate whether there is a relationship between 2 variables.

Please select a choice

A statistically significant result does not tell us which groups show statistically significant differences.

It cannot evaluate whether one of the variables causes another variable.

It can evaluate whether the sample size needs to be larger.

It can evaluate whether there is a relationship between homoscedacity and homogeneity.

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