Explain the given answers on Stats Questions

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To gain points for the Quizzes, let’s take a Mastery Approach to Learning. I will need you to show me that of the questions you got wrong on those two quizzes that you know WHY you got them wrong and then explain the correct answer to me in detail.

 

Below is the List of Questions you got wrong on the quizzes. In a separate document, for each question please outline the following:

1)      WHY you got the answer wrong. Your thinking process when you answered.

2)      Explain why the CORRECT answer is correct, by explaining the concept to me in detail to show me that you understand the material (need ample details).

 

Please submit to me as a Word Document via e-mail.

 

 

Quiz Part A Questions:

 

1)      Research differs from everyday observation primarily because researchers

Given Answer:

 

can find data even when it isn't there

Correct Answer:

 

plan their observations in advance

 

2)      An average is an example of 

Given Answer:

 

None of the above

Correct Answer:

 

A descriptive statistic

 

3)      Which two scales of measurement tell us by how much participants differ from each other?

Given Answer:

 

Ordinal and nominal

Correct Answer:

 

Ratio and interval

 

4)      What is the most important characteristic of a good sample?

Given Answer:

 

N = 50

Correct Answer:

 

Being free from bias

 

5)      "Using random sampling identifies an unbiased sample." This statement is

Given Answer:

 False

Correct Answer:

True

6)      A survey is an example of an experimental study."  This statement is

 

Given Answer:

 True

Correct Answer:

False

 

 

 

 

7)      "Measuring height using a tape measure is an example of the ratio sale of measurement." This statement is

Given Answer:

 False

Correct Answer:

True

 

Quiz Part C Questions:

 

1)      Which of the following values of R represents the strongest relationship?

Given Answer:

 

R= -.95

Correct Answer:

 

R=-1.00

 

2)      When there is a perfect, direct relationship, what is the value of r?

Given Answer:

 

-1.00

Correct Answer:

 

Some other value

 

3)      When the coefficient of determination equals 0.70, what percentage of variance on one variable is not predicted by the other variable?

Given Answer:

 

some other percentage

Correct Answer:

 

30%

 

4)      "When the dots in a scattergram form a pattern from the lower left to the upper right, the relationship is direct." This statement is

Given Answer:

 False

Correct Answer:

True

 

5)      Which of the following values of r represents the strongest relationship?

Given Answer:

 

-0.33

Correct Answer:

 

-1.00

 

6)      "When r = .20, the percentage of variance accounted for is 20%."  This statement is

Given Answer:

 True

Correct Answer:

False

 

7)      "An r of -0.45 represents a stronger relationship than an r of 0.88." This statement is

Given Answer:

 True

Correct Answer:

False

 

8)      For determining the correlation between a combination of two predictors to predict a third variable, which of the following should be computed?

Given Answer:

 

r

Correct Answer:

 

R

When high scores on one variable are associated with high scores on the other variable, this suggests that the relationship is

Given Answer:

 

indirect

Correct Answer:

 

direct

 

10)  "Each dot in a scattergram stands for a participant's score on one variable." This statement is

Given Answer:

 True

Correct Answer:

False

 

 

11)  For the scores on Test F and Test G shown below, there is

Given Answer:

 

a direct relationship

Correct Answer:

 

an inverse relationship