A one-way and two-way chi-square differs in which way?
A) a one-way chi-square has one variable whereas a two-way chi-square has two
B) a one-way chi-square tests for goodness of fit whereas a two-way tests for independence
C) a one-way chi-square tests for whether an observed distribution fits what is expected, and a two-way chi-square tests for whether two variables are related to one another.
D) All of the above are true differences

Question

Quizplus · Accepted Answer

All the statements provided are correct differences between a one-way and two-way chi-square. A one-way chi-square involves one categorical variable and tests for goodness of fit between observed and expected frequencies. A two-way chi-square involves two categorical variables and tests for independence or association between them.

A One-Way and Two-Way Chi-Square Differs in Which Way