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Chapter 2: Q.27 (page 132)

a. For runners in a race, a higher speed means a faster run. Is it more desirable to have a speed with a high or a low percentile when running a race?

b. The 40th percentile of speeds in a particular race is7.5 miles per hour. Write a sentence interpreting the 40th percentile in the context of the situation.

Short Answer

Expert verified

a. It is desirable to have speed with high percentile.

b.60%of runners finished their race at speed of7.5mileswith1hour.or more

Step by step solution

01

Content Introduction

The frequency of a data value is the number of times it happens.

02

Explanation (Part a)

It is desirable to have speed with high percentile when running race because high percentile means high speed.

03

Explanation (Part b)

It can be interpreted as 40%of runners finished their race at speed 7.5milesper hour or less. On the other hand, 60%of runners finished their race at speed of 7.5miles within an hour or more

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