Answers to 9.1 one-way ANOVA

1. Does students differ on English scores by rank (i.e., freshmen, sophomore, junior, senior)?

   • Do you satisfy the assumption of normality? (answer = yes)

   • Do you satisfy the assumption of homogeneity of variance? (answer = yes)

   • Which statistic should you use? (answer = one-way ANOVA)

   • Do students differ on English scores by rank? (answer = no)

2. Does smoking status (Smoking: Nonsmoker = 0, Past smoker = 1, Current smoker = 2) relate to sprint time?

   • Do you satisfy the assumption of normality? (answer = no)

   • Do you satisfy the assumption of homogeneity of variance? (answer = yes)

   • Which statistic should you use? (answer = Kruskal-Wallis test)

   • Does smoking status relate to sprint time? (answer = yes)