1. Figure out the degrees of freedom, look up the critical value, make a decision about the null hypothesis, and write appropriate, complete conclusion for each of the fictional sets of results below [no calculations necessary].

a. Exploring the relationship between year in school and GPA, with four groups: freshman, sophomore, junior, senior - seniors had the highest GPA, followed by juniors, followed by sophomores, followed by freshman. Total N=32. Fobserved=2.88, =.05.

b. Exploring the effect of hair color on number of dates per month, with four groups: Blonde, Red hair, Brown hair, Black hair. Red heads went on the most dates, and the other three were equal. Total N=12, Fobserved=3.60, =.05.

2. In a randomly drawn subsample from a previous section of Psy 320, we were interested in whether there was a difference in how good someone is at studying, based on their favorite season. The following data were obtained for 16 students. Conduct the appropriate test, calculate an effect size, and calculate pairwise comparisons (post hoc tests). Create summary table and write conclusion. The scores (higher scores indicate better studying) were as follows: Spring Summer Fall Winter 3 3 3 4 3 1 3 3 4 2 5 4 3 1 4 4