Dr Juni Is Organizing Data from His Recent Study on Aggression

question 19

Multiple Choice

Dr. Juni is organizing data from his recent study on aggression. He decided to classify participants based on their self-reported hair color: blond, brown, red, and black. Dr. Juni then runs analyses using these groupings. Dr. Juni is grouping the participants based on a(n) :

• A) categorical variable.
• B) continuous variable.
• C) ordinal variable.
• D) interval variable.

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Definitions:

Expected Frequencies

In statistics, the anticipated counts in each category of a contingency table if there were no association between the variables.

Multiple Correlation

A statistical technique that predicts the value of one variable based on the combined values of two or more other variables.

Pearson Correlation

A measure of the linear correlation between two variables, quantified by a coefficient that ranges from -1 to 1.

Degrees Freedom

The number of independent pieces of information used in the calculation of a statistic, often symbolized as "df".