Is it possible that being in a particular group results in higher or lower mean achievement levels? Youre going to explore gender differences and overall learner GPA.
SPSS Variables and Definitions
SPSS Variable Definition
Gender female = 1; male = 2
GPA previous grade point average
Step 1: The Data Analysis Plan
In Step 1:
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: Testing Assumptions:
Test for one of the assumptions of t-testshomogeneity of variance.
Create SPSS output showing the Levene’s test for equality variances. Run the Levene’s test on the dependent variable test for the entire sample. Do not split the data up by gender before running the homogeneity test.
Paste the table in the DAA Template.
Interpret the Levene’s test.
Step 3: Results and Interpretation
Paste the SPSS output of the t-test. Below the output:
Report the means and standard deviations for each group.
State the results of the t-test using the “Assume equal variances” row.
Interpret the statistical results against the null hypothesis and state whether it is accepted or rejected.
Step 4: Statistical Conclusions
In Step 4:
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: Application
In Step 5:
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.
