Chapter 2: Q. 2.15 (page 91)
Forty bus drivers were asked how many hours they spend each day running their routes (rounded to the nearest hour). Find the percentile.

Short Answer
The percentile is
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Chapter 2: Q. 2.15 (page 91)
Forty bus drivers were asked how many hours they spend each day running their routes (rounded to the nearest hour). Find the percentile.

The percentile is
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a. For runners in a race, a low time means a faster run. The winners in a race have the shortest running times. Is it more desirable to have a finish time with a high or a low percentile when running a race?
b. The percentile of run times in a particular race is minutes. Write a sentence interpreting the percentile in the context of the situation.
c. A bicyclist in the percentile of a bicycle race completed the race in hour and minutes. Is he among the fastest or slowest cyclists in the race? Write a sentence interpreting the percentile in the context of the situation.
Use the following information to answer the next six exercises. Sixty-five randomly selected car salespersons were asked the number of cars they generally sell in one week. Fourteen people answered that they generally sell three cars; nineteen generally sell four cars; twelve generally sell five cars; nine generally sell six cars; eleven generally sell seven cars.
percentile = _______
The following data are the shoe sizes of male students. The sizes are continuous data since shoe size is measured. Construct a histogram and calculate the width of each bar or class interval. Suppose you choose six bars.
What is the IQR?
The following table is a portion of a data set from www.worldbank.org. Use the table to construct a time series graph for CO2 emissions for the United States.

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