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Chapter 1: Problem 73

Describe an association between two variables. Give a confounding variable that may help to account for this association. Sales of toboggans tend to be higher when sales of mittens are higher.

Short Answer

Expert verified
The confounding variable could be 'Weather'. It's likely that in colder weather, people are more likely to buy mittens and toboggans, hence higher sales of both.

Step by step solution

01

Understand Variables

Identify the two variables in question. In this instance, the two variables are sales of toboggans and sales of mittens.
02

Determine the Association

Observe and describe the relationship between the two variables. Here, it's stated that when sales of mittens are higher, sales of toboggans tend to be higher as well.
03

Identify Confounding Variable

Find the third variable, confounding variable, that could influence both mittens and toboggans' sales and establish the apparent other relation. For this exercise, an example could be 'cold weather.' In colder weather, people are more likely to buy both mittens and toboggans, thereby increasing their sales.

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