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Explanatory and Response Variables

A fast food chain sells its burgers alone or as part of a "value meal" which includes fries and a drink. They know some customers are health conscious. They want to do an experiment to see if the proportion of customers choosing the meal would increase if they offered baby carrots with the meal as an alternative to the fries. They will compare three treatments: (1) status quo, (2) offering carrots as an alternative, but with no advertising, and (3) offering carrots as an alternative, and advertising this option in the local area.

a. What are the explanatory and response variables?
b. Diagram the experiment.

Solution Preview

a. What are the explanatory and response variables?
In statistical studies a variable of interest, called the response variable is identified. Then data are collected that tell us about how one or more factors (or explanatory variables) influence ...

Solution Summary

This solution finds the explanatory and response variables of a "value meal" offered at a fast food chain.

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