A Measure of _____ Is a Number That Characterizes the Amount

question 3

Multiple Choice

A measure of _____ is a number that characterizes the amount of spread in a distribution of scores.

• A)central tendency
• B)effect size
• C)correlation
• D)variability

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Definitions:

Dependent Variables

Variables in an experiment or model that are affected by changes in the independent variables, typically outcomes or results being measured.

Categorical Variable

A variable that can take on one of a limited, and usually fixed, number of possible values, assigning each individual or other entity to a particular group or nominal category.

Dummy Variables

Variables created to include categorical data in regression models, converting categories to a numerical form.

Confidence Intervals

Ranges within which a population parameter is estimated to lie with a certain level of confidence, often used to indicate the reliability of an estimate.