T-TEST APPLICATION AND INTERPRETATION

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t-Test

Open grades.sav in SPSS.

On the Analyze menu, point to Compare Means and select Independent-Samples T Test…

Select final. Select the arrow to move final to the Test Variables box.

Select review. Select the arrow to move review to the Grouping Variable box.

Select Define Groups…

Set Group 1 to 1. Set Group 2 to 2. Select Continue.

Select OK.

Copy and paste the t-test output in DAA Section 3.

In DAA Section 2, discuss the Levene’s Test (no output necessary). In DAA Section 3, report the means and standard deviations for each group. Report the t-test using the "Assume equal variances" row. Interpret the statistical results against the null hypothesis and state whether it is rejected or not rejected.

DAA Sections 2 and 3 should look like the next page.

Testing Assumptions

Report and interpret the Levene’s test. The Levene’s Test output appears below in Section 3.

Results & Interpretation

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 rejected or not rejected.

SCREENSHOTS TAKEN FROM SPSS (PC) VERSION 28.

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