The two boxplots correspond to the service times from two different companies th

Question

The two boxplots correspond to the service times from two different companies that repair air conditioning units. They are drawn on the same scale. The top boxplot corresponds to Inc., and the boxplot corresponds to the Fresh Air company. Which company has less variation in repair times? Which company should have more predictable costs? Choose the correct answer below. A. Qool has less variation. Because Qool has less variation, estimates of repair costs will tend to be more accurate, so the costs will tend to be more predictable. B. Qool has less variation. Because Qool has less variation, estimates of repair costs will tend to be less accurate. Thus, Fresh will have more predictable costs. C. Fresh has less variation. Because Fresh has less variation, estimates of repair costs will tend to be less accurate. Thus, Qool will have more predictable costs. D. Fresh has less variation. Because Fresh less variation. Because Fresh has less variation, estimates of repair costs will tend to be more accurate, so the costs will tend to be more predictable.

Explanation / Answer

The Qool Air Inc. has less variation ( visible from the small whiskers ) and smaller spread.

Hence, option Qool has less variation. Because Qool has less variation, estimates of repair costs will tend to be more accrate, so costs will tend to be more predictable.

Option A is the answer

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