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Chapter 2: Q. 64 (page 137)
The mean and median for the data are the same 3; 4; 5; 5; 6; 6; 6; 6; 7; 7; 7; 7; 7; 7; 7
Mean and median of the given data set is are both equal to 6.
So, the data is perfectly symmetrical.
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The data are daily high temperatures in a town for one month.
In a survey of 20-year-olds in China, Germany, and the United States, people were asked the number of foreign countries they had visited in their lifetime. The following box plots display the results.
a. In complete sentences, describe what the shape of each box plot implies about the distribution of the data collected.
b. Have more Americans or more Germans surveyed been to over eight foreign countries?
c. Compare the three box plots. What do they imply about the foreign travel of 20-year-old residents of the three countries when compared to each other
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 data from the David County science competition supplied in Exercise . Construct a bar graph that shows the county-wide population percentage of students at each school.
Given the following box plots, answer the questions.
a. In complete sentences, explain why each statement is false.
i. Data 1 has more data values above two than Data 2 has above two.
ii. The data sets cannot have the same mode.
iii. For Data 1, there are more data values below four than there are above four.
b. For which group, Data 1 or Data 2, is the value of 鈥�7鈥� more likely to be an outlier? Explain why in complete sentences.
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