The t-test can be characterized as a regression (linear) model if?
A) The outcome variable is categorical.
B) The groups have equal sample sizes.
C) The experimental groups are represented by a binary variable .
D) A t-test is always different from regression

Question

Quizplus · Accepted Answer

If the experimental groups are represented by a binary variable, then the t-test can be modeled as a regression model with a binary predictor variable. The predictor variable would indicate which group each participant belongs to, and the regression coefficient would indicate the difference between the two groups. Therefore, choice C is the correct answer. Choices A and B are incorrect because the outcome variable can be continuous in a t-test, and the sample sizes do not have to be equal. Choice D is incorrect because a t-test can be seen as a specific case of regression.

The T-Test Can Be Characterized as a Regression (Linear) Model