Brian wants to compare the test scores in one class to the test scores in another class. Which test of statistical significance should Brian use?
A) Pearson r
B) an independent t test
C) a correlated t test
D) a point-biserial correlation

Question

Quizplus · Accepted Answer

An independent t test is appropriate to compare the test scores in two different classes as it compares the means of two independent groups. Pearson r is used to measure the correlation between two continuous variables, a correlated t test is used when comparing two related samples, and a point-biserial correlation is used when comparing a continuous variable and a dichotomous variable.

Brian Wants to Compare the Test Scores in One Class