Step 1: Write Section 1 of the DAA:The Data Analysis Plan

• Name the variables used in this analysis and whether they are categorical or continuous.
• State a research question, null hypothesis, and alternate hypothesis for the independent samples t-test.

Step 2: Write Section 2 of the DAA:Testing Assumptions

Test for one of the assumptions of t tests - equality (homogeneity) of variances.

• Create statistical output showing the Levene's Test for Equality Variances.
• Paste the table in the DAA template.
• Interpret the Levene's test.

Step 3: Write Section 3 of the DAA:Results and Interpretation

• If the homogeneity assumption is not violated (Section 2), run the "Student" version of the independent samples t test in the statistical software.
• If the homogeneity assumption is violated, run the "Welch" version of the independent samples t-test in the statistical software.
• Also, run the "Descriptives" option to obtain the means and standard deviations for each group.

Paste the statistical software output of the t test into the DAA template. Below the output:

• Report the means and standard deviations for each group.
• State the results of the t test.
• Interpret the statistical results against the null hypothesis and state whether it is rejected or not rejected.

Step 4: Write Section 4 of the DAA:Statistical Conclusions

• Provide a brief summary of your analysis and the conclusions drawn about this t test.
• Analyze the limitations of the statistical test and/or possible alternative explanations for your results.

Step 5: Write Section 5 of the DAA:Application

Analyze how you might use the independent samples t test in your field of study.

• Name an independent variable and dependent variable that would work for such an analysis and why studying it may be important to the field or practice.