A Retailer Is Interested in Studying the Effect of In-Store

question 4

Multiple Choice

A retailer is interested in studying the effect of in-store promotions on the amount of money people spend during a store visit. Which of the following will NOT be considered an extraneous variable for this study?

• A)The mood of the shoppers as they enter the store.
• B)The average amount of money spent by shoppers in the store.
• C)The number of kids under the age of two that accompany an adult shopper.
• D)The day of the week / month when the study is conducted.
• E)The air temperature outside the store.

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Definitions:

Variation

In statistics, it refers to the measure of the spread or dispersion of a set of data points or values in a dataset.

Explanatory Variables

Variables in a statistical model that are used to explain variance in the dependent variable; also known as independent variables.

Sales

The exchange of a commodity for money; the action of selling something.

Least Significant

Refers to the component of a data set, measurement, or statistical result that contributes the least impact or importance.