Chapter 2: Q. 28 (page 132)
On an exam, would it be more desirable to earn a grade with a high or low percentile? Explain
Short Answer
A high percentile would be more desirable because higher percentiles correspond to higher grades on the exam.
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Chapter 2: Q. 28 (page 132)
On an exam, would it be more desirable to earn a grade with a high or low percentile? Explain
A high percentile would be more desirable because higher percentiles correspond to higher grades on the exam.
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The most obese countries in the world have obesity rates that range from 11.4% to 74.6%. This data is summarized in the following table.

a. What is the best estimate of the average obesity percentage for these countries?
b. The United States has an average obesity rate of 33.9%. Is this rate above average or below?
c. How does the United States compare to other countries?
Forty randomly selected students were asked the number of pairs of sneakers they owned. Let = the number of pairs of sneakers owned. The results are as follows:

a. Find the sample mean.
b. Find the sample standard deviation, s
c. Construct a histogram of the data.
d. Complete the columns of the chart.
e. Find the first quartile.
f. Find the median.
g. Find the third quartile.
h. Construct a box plot of the data.
i. What percent of the students owned at least five pairs?
j. Find the percentile.
k. Find the percentile.
l. Construct a line graph of the data.
m. Construct a stemplot of the data.
The number of books checked out from the library from students are as follows:
Find the mode.
Use the following information to answer the next three 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. Calculate the following:
mode = _______
In a survey, people were asked how many times they visited a store before making a major purchase. The results are shown in Table .

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