The _____ is commonly used to examine whether two groups are significantly different from each other.
A)t test
B)Mann-Whitney U test
C)Chi-square test
D)r test

Question

Quizplus · Accepted Answer

The t test is commonly used to examine whether two groups are significantly different from each other. It is a statistical test that allows comparison of means between two groups, and determines whether the difference is statistically significant or due to chance. The Mann-Whitney U test is also used to compare two groups, but it is a non-parametric test that compares medians instead of means. The Chi-square test is used to examine the association between two categorical variables, while the r test (also known as Pearson correlation) is used to determine the strength and direction of the linear relationship between two continuous variables.

The _____ Is Commonly Used to Examine Whether Two Groups