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Using designs with more than two levels of an independent variable allows researchers to​ a. ​compare...

Using designs with more than two levels of an independent variable allows researchers to​ a. ​compare a placebo group to the control and experimental groups. b. ​compare more than two kinds of treatment in one study. c. ​accomplish all of the other alternatives. d. ​compare two or more kinds of treatment with a control group. ​

A two-way ANOVA means that the experimental design includes a. ​two independent variables b. ​all of the above c. ​two dependent variables d. ​two types of variance

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1)Using designs with more than two levels of an independent variable allows researchers to:

compare two or more kinds of treatment with a control group. ​

(option d is correct)

2)A two-way ANOVA means that the experimental design includes:

​two independent variables

(option a is correct)

The two-way ANOVA compares the mean differences between groups that have been split on two independent variables (called factors). The primary purpose of a two-way ANOVA is to understand if there is an interaction between the two independent variables on the dependent variable.

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