Week 8

3 weeks from now

In this assignment, you will learn how to conduct and interpret a chi-square analysis. You will use the IBM SPSS Crosstabs procedure with the .sav file provided. The two variables to be analyzed will be pass/fail and lowup (lower class versus upper class students). Be sure to consult the Capella Writing Center for guidance.

Please use the DAA Template [DOCX] to complete your assignment.

Instructions

Complete the following:

Step 1. Provide a context for the data set in the supplied .sav file. Include a definition of the specified variables, levels of each factor, and the outcome variable. Define the corresponding scales of measurement for each variable. Specify the sample size of the data set.

Step 2. Specify a research question for this chi-square. Articulate a null hypothesis and alternative hypothesis for the chi-square. Specify the alpha level.

Step 3.

Paste the SPSS output showing expected frequencies (E). Report E for each cell in the 2 x 2 table.

Determine if the expected frequencies assumption is met.

If the assumption is met, indicate which version of chi-square should be reported.

If the assumption is not met, indicate which version of chi-square should be reported.

Step 4.

Begin by stating your conclusion regarding the expected frequencies assumption.

Next, create a table of observed frequencies for the two variables low up and pass/fail.

Report the observed number of passengers in lower class and the upper class who were passed and failed.

Next, paste the SPSS output for Symmetric Measures.

Report the phi coefficient and interpret the effect size.

Then paste the SPSS output for chi-square Tests.

Report the version of chi-square that is appropriate given the E assumption. Include the symbol for chi-square, the degree of freedom, the chi-square value, the p-value, and your decision regarding the null hypothesis.

Next, calculate and report the odds of passing for the upper class group and odds of passing for the lower class group.

Finally, calculate the odds ratio of passing comparing the upper class group to the lower class group.

Step 5. Discuss your conclusions of the chi-square as it relates to your stated research question. Conclude with an analysis of the strengths and limitations of chi-square analysis.

Submit your assignment as a Word document. The deadline for submitting your work is 11:59 p.m. CST Sunday of Week 8.

Additional Requirements

Your assignment should also meet the following requirements:

Written communication: Should be free of errors that detract from the overall message.

APA formatting: References and citations are formatted according to current APA style guidelines. Review the Evidence and APA section of the

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