Which of the following statistics can be used to determine whether there is a statistically significant difference between three treatment groups in number of days hospitalized?
A) t-test
B) chi-square
C) analysis of variance
D) Pearson's product-moment r

Question

Quizplus · Accepted Answer

Analysis of variance (ANOVA) can be used to compare means between three or more groups. The t-test is only used to compare means between two groups, while chi-square is used for comparing categorical data. Pearson's product-moment r is used for measuring the strength of a correlation between two continuous variables.

Which of the Following Statistics Can Be Used to Determine