The Experimental and Control Groups Should Be Comparable On

question 16

Multiple Choice

The experimental and control groups should be comparable on:

• A)variables that are likely to be related to the independent variable under study.
• B)variables that are likely to be related to the dependent variable under study.
• C)age, education, and ethnicity.
• D)all demographic variables.
• E)variables that are unlikely to be related to the independent variable under study.

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Definitions:

Mean Square

In analysis of variance (ANOVA), the average of squared differences from the mean, used to assess within-group and between-group variability.

Error

The difference between the observed value and the true value in statistics and scientific measurements.

Null Hypothesis

A statement used in hypothesis testing that indicates no significant difference or effect.

P-value

The probability of observing a statistic at least as extreme as the one observed, given that the null hypothesis is true.