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EDR-8202_Week2_AssignmentWorksheet.docx

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EDR-8202: Statistics II

Week 2 Assignment Worksheet: Conduct Hypothesis Testing

You will now have the opportunity to become re-acquainted with hypothesis testing concepts, and the use of SPSS to review some of the basic statistical concepts learned and to enhance APA format when presenting statistical results.

The following small data set is from a study conducted within a single middle school. Fundamentally, this study is a comparison of the differences between male and female teachers in personal Confidence Scores and was conducted to determine if a relationship exists between the number of Years of Experience and Confidence Scores. The researcher wants to examine if years of experience could be used as a predictor of confidence scores and if gender could also impact confidence scores.

Sex	Years of Experience	Confidence Scores
Male	15	110
Male	3	117
Female	12	118
Male	8	120
Female	23	104
Female	9	100
Male	37	107
Male	14	115
Male	10	114
Female	4	115
Female	11	115
Male	1	100
Female	3	117
Female	7	115
Male	2	103
Female	21	125
Male	28	115
Female	9	115
Male	5	110
Female	3	110

Using scholarly writing and proper APA format, complete, and then submit the following:

I. Please answer the following questions using the readings assigned for this week.

1. What is hypothesis testing?

2. Discuss the following statement: “The sample must be representative of the population.” In your discussion, please include the concepts of generalizability and sampling procedures.

3. In hypothesis testing, there are some errors that could be committed if the wrong decision is made regarding the null hypothesis. These errors are Type I and Type II errors. Please describe each one of them, and provide an example when you are committing a Type I and Type II error.

4. Discuss each of the three main assumptions for parametric statistics. Be sure your discussion includes the variables that will be tested for the assumptions, the independent or dependent variable.

a. Normality

b. Homogeneity of variance (please provide an example of an analysis where this assumption is important)

c. Independence

II. Please open the file used in assignment 1 (Confidence scores and years of experience), or type the data provided in the table above in SPSS. Once the dataset is open or the data is typed, proceed to answer questions 4 and 5.

5. Conduct the appropriate test (Kolmogorov-Smirnov or Shapiro-Wilk’s) for normality, and provide the results, and a brief discussion of the results below (test used, test results, p-value, etc.). Be sure to discuss if the assumption of normality was met or violated.

6. Conduct the test homogeneity of variance, and provide the results, and a brief discussion of the results below (test used, test results, p-value, etc.). Be sure to discuss if the assumption of normality was met or violated.