Chapter 2: Q.4 (page 125)
The data are daily high temperatures in a town for one month.
Short Answer
It is observed that temperature in town is highly concentrated at .There is one outliner in the given data and its temperature is of
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Chapter 2: Q.4 (page 125)
The data are daily high temperatures in a town for one month.
It is observed that temperature in town is highly concentrated at .There is one outliner in the given data and its temperature is of
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In a sample of households, one house is worth \(. Half of the rest are worth , and all the others are worth . Which is the better measure of the 鈥渃enter鈥: the mean or the median?
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?
Use the following information to answer the next two 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.
Looking at your box plot, does it appear that the data are concentrated together, spread out evenly, or concentrated in some areas, but not in others? How can you tell?
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 percentile of speeds in a particular race is miles per hour. Write a sentence interpreting the percentile in the context of the situation.
The University of California has two criteria used to set admission standards for freshmen to be admitted to a college in the UC system:
a. Students' GPAs and scores on standardized tests (SATs and ACTs) are entered into a formula that calculates an "admissions index" score. The admissions index score is used to set eligibility standards intended to meet the goal of admitting the top of high school students in the state. In this context, what percentile does the top represent?
b. Students whoseGPAs are at or above the 96th percentile of all students at their high school are eligible (called eligible in the local context), even if they are not in the top of all students in the state. What percentage of students from each high school are "eligible in the local context"?
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