Calculate cronbachs alpha, Basic Statistics

This week, you have learned about how to use Cronbach's alpha as a measure of scale reliability. In this Application, you will calculate Cronbach's alpha for provided data.

To prepare for this Application:

• Review pp. 673-676 of the Field text for a description of using Cronbach's alpha to measure scale reliability.

• Review Chapter 5 from the APA manual, "Displaying Results."

The assignment:

Calculate Cronbach's alpha on the scale provided on pp. 676-678 of the Field text using the SAQ.sav file.

Report your findings in APA format according to the guidelines below:

1. State the underlying assumptions for the statistical test.

2. State whether the assumptions have been met. If the assumptions were not met (either in actuality or hypothetically), state what alternatives you have available to you.

3. State the null and alternative (research) hypotheses.

4. Copy your syntax file and paste it into your MS Word Document.

5. For your output file: Select all -> Copy all objects -> Paste into your MS word document. This will ensure that your output is in a form that your instructor can read.

6. Create a results table consistent with requirements from the APA style manual.

7. Report the results using correct APA format.

a. For ANOVA, ANCOVA, and Repeated Measures ANOVA models, ensure that you provide interpretations for the main effects and interactions as well as any post-hoc tests.

b. For Multiple and Logistic Regression models, ensure that you include appropriate measures of model fit as well as the specific procedure used (e.g., Hierarchical, Enter, Stepwise, Forward, Backward).

8. Describe how you would compute the sample size to achieve 80% power, alpha = .05, and the appropriate effect size.

Posted Date: 3/2/2013 1:57:55 AM | Location : United States

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