[Note to Instructor: Use This Question Only If You Are

question 2

Multiple Choice

[Note to Instructor: Use this question only if you are combining questions from all inferential statistics chapters.] If you have four groups with equal sample sizes and an interval-level dependent variable, what statistic would you use to determine if a relationship exists?

• A) the maximum-likelihood chi-square
• B) analysis of variance
• C) equal variance t-test
• D) Fisher's exact test

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Definitions:

Random Variable

A variable whose possible values are numerical outcomes of a random phenomenon.

Regression Equation

A formula derived from regression analysis that predicts the dependent variable based on the values of one or more independent variables.

Regression Model

A statistical technique used to predict the value of a dependent variable based on the values of one or more independent variables.

Estimated Regression Equation

A formula that models the relationship between dependent and independent variables, predicting the dependent variable based on values of the independent variables.