Is it possible that being in a particular group results in higher or lower mean achievement levels? You're going to explore possible differences in final exam scores for students who attended a review session versus students who did not attend a review session.

The data represent a teacher's recording of student demographics and performance on quizzes and a final exam across three sections of the course.

You will analyze the following variables in thegrades.jaspdata set:

Variable	Definition
Review	Attended review sessions? 1 = no; 2 = yes.
Test	Test exam: number of correct answers.

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 samplest-test.

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.

Assumption Checks Test of Equality of Variances (Levene's) F df 1 df2 p final 0.740 103 0.392\fDescriptives Group Descriptives Group N Mean SD final Attended review session 55 61.545 7.356 Did not attend review session 50 62.160 7.993