Conducting and Analyzing Statistical Tests

By Sunday , February 7, 2016, post your results to the M5: Assignment 1 Dropbox. Your written presentation to the following problem situation should be a formal academic presentation wherein APA guidelines apply.  

A study wants to examine the relationship between student anxiety for an exam and the number of hours studied. The data is as follows:

1. Why is a correlation the most appropriate statistic?
2. What is the null and alternate hypothesis?
3. What is the correlation between student anxiety scores and number of study hours? Select alpha and interpret your findings. Make sure to note whether it is significant or not and what the effect size is.
4. How would you interpret this?
5. What is the probability of a type I error? What does this mean?
6. How would you use this same information but set it up in a way that allows you to conduct a t-test? An ANOVA?  

Be sure to address all 6 components of this assignment thoroughly. Note that some of the 6 components have more than one question. Don’t leave anything out.

There are a couple of things to look out for in this assignment:

1) Question #4 asks you to interpret the correlation you calculated. You lecture notes for Module 5 contain a chart on page 3 of the Correlations section to use for this.

2) Question #6 is asking you to take the same data you are given in the assignment instructions and modify it in such a way that you can perform a t-test and an ANOVA. The best way to approach this is to jot down the requirements for a t-test and then look at the data and decide what you would have to do to the data to meet those requirements. Be careful with this! Don’t rush through it; think it through carefully. Use the same logic for the ANOVA.

 Please show references. 

Assignment 1 Grading Criteria	Maximum Points
Explain why a correlation is the most appropriate statistic.	36
List the null and alternate hypothesis.	20
Compute and correctly present the correlation between student anxiety scores and number of study hours.	36
List the alpha, statistical significance of the results and the effect size. Provide an interpretation of the results.	60
List the probability of a type I error and explain what it means.	36
Explain how the same information would be set up to allow one to conduct a t-test and an ANOVA.	48
Writing Components: Organization: Introduction, Thesis, Transitions, Conclusion Usage and Mechanics: Grammar, Spelling, Sentence structure APA Elements: Attribution, Paraphrasing, Quotations Style: Audience, Word Choice	64
Total:	300