Diana examines violence prevention programs. She is interested in the differences in number of referrals for violent behavior between two schools. One school has implemented a violence prevention program and the other has not. Diana is likely to use which of the following statistical procedures to analyze her data?
A) Chi Square
B) T test
C) Pearson r
D) ANOVA

Question

Quizplus · Accepted Answer

The most appropriate statistical procedure for comparing the number of referrals for violent behavior in two categorical groups (in this case, schools with or without a violence prevention program) is a chi-square test. The chi-square test assesses whether there is a significant association between two categorical variables. In this case, the variables are school (with or without a violence prevention program) and number of referrals for violent behavior. The test determines whether the observed differences in referrals are statistically significant, and it allows for comparison of the expected versus the actual frequency of occurrence for each category. Alternatively, a t-test or ANOVA would be more appropriate when analyzing continuous variables, while Pearson's r is used for assessing the strength of the linear correlation between two continuous variables.

Diana Examines Violence Prevention Programs