1. A member of the retention committee at a college decided she wanted to explore the progress that Freshmen are making. She collected GPA data on those freshmen in the Fall, and then again in the Spring. She is uncertain whether to predict an increase or a decrease between semesters, so she decides to see whether freshman GPAs change between Fall and Spring semester.

What hypothesis is being tested here?

What are the mean GPAs for Fall and Spring?

How many freshmen were included in the analysis?

What is the mean difference?

Write your conclusion in the three sentence format?

Paired Samples Statistics N Pair 1 Mean 2.1077 2.1312 GPA first semester GPA second semester 37 Std. Deviation 59771 .62985 Std. Error Mean 09826 .10355 37 Paired Samples Correlations N Correlation GPA first semester & GPA 37 .974 second semester Sig. .000 Pair 1 Paired Samples Test Paired Differences 95% Confidence Interval of the Difference Std. Error Mean Lower Upper .02378 -07176 .02471 Mean Std. Deviation t df Sig. (2-tailed) .329 Pair 1 -02353 .14466 - 989 36 GPA first semester - GPA second semester Paired Samples Statistics N Pair 1 Mean 2.1077 2.1312 GPA first semester GPA second semester 37 Std. Deviation 59771 .62985 Std. Error Mean 09826 .10355 37 Paired Samples Correlations N Correlation GPA first semester & GPA 37 .974 second semester Sig. .000 Pair 1 Paired Samples Test Paired Differences 95% Confidence Interval of the Difference Std. Error Mean Lower Upper .02378 -07176 .02471 Mean Std. Deviation t df Sig. (2-tailed) .329 Pair 1 -02353 .14466 - 989 36 GPA first semester - GPA second semester