Find the Coefficient of Variation for Each of the Two

question 167

Multiple Choice

Find the coefficient of variation for each of the two sets of data, then compare the variation. Round results to one decimal place.
-Compare the variation in heights to the variation in weights of thirteen-year old girls. The heights (in inches) and weights (in pounds) of nine randomly selected thirteen-year old girls are listed below.

$\begin{array}{llllllllll}\text { Heights (inches) : } & 59.4 & 61.2 & 62.1 & 64.7 & 60.1 & 58.3 & 64.6 & 63.7 & 66.1 \\\text { Weights (pounds) : } &87 & 94 & 93 & 119 & 96 & 90 & 123 & 98 & 139\end{array}$

• A) Heights: 4.6%
• Weights: 18.3%
• There is substantially more variation in the weights than in the heights of the girls.
• B) Heights: 11.4%
• Weights: 6.5%
• There is substantially more variation in the heights than in the weights of the girls.
• C) Heights: 4.1%
• Weights: 16.5%
• There is substantially more variation in the weights than in the heights of the girls.
• D) Heights: 4.3%
• Weights: 17.3%
• There is substantially more variation in the weights than in the heights of the girls.

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Definitions:

Pavlov

A Russian physiologist best known for his work in classical conditioning, particularly with the conditioned response of salivation in dogs.

Conditioned Response

A learned reaction to a previously neutral stimulus due to repeated association with an unconditioned stimulus.

Unconditioned Response

An automatic, natural reaction to a stimulus that occurs without prior conditioning.

Rescorla-Wagner

A model proposing that the strength of a conditioned response depends on the unexpectedness of the unconditioned stimulus.