Chapter 2: Q. 58 (page 135)
Describe the shape of this distribution.

Short Answer
The distribution is approximately symmetrical.
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Chapter 2: Q. 58 (page 135)
Describe the shape of this distribution.

The distribution is approximately symmetrical.
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David County has six high schools. Each school sent students to participate in a county-wide science competition. Table shows the percentage breakdown of competitors from each school, and the percentage of the entire student population of the county that goes to each school. Construct a bar graph that shows the population percentage of competitors from each school.

Santa Clara County, CA, has approximately Japanese-Americans. Their ages are as follows:

a. Construct a histogram of the Japanese-American community in Santa Clara County, CA. The bars will not be the
same width for this example. Why not? What impact does this have on the reliability of the graph?
b. What percentage of the community is under age ?
c. Which box plot most resembles the information above?

Jesse was ranked in his graduating class of students. At what percentile is Jesse’s ranking?
In a survey, several people were asked how many years it has been since they purchased a mattress. The results are shown in Table

Javier and Ercilia are supervisors at a shopping mall. Each was given the task of estimating the mean distance that shoppers live from the mall. They each randomly surveyed shoppers. The samples yielded the following information.

a. How can you determine which survey was correct ?
b. Explain what the difference in the results of the surveys implies about the data.
c. If the two histograms depict the distribution of values for each supervisor, which one depicts Ercilia's sample? How do you know?

d. If the two box plots depict the distribution of values for each supervisor, which one depicts Ercilia’s sample? How do you know?

Use the following information to answer the next three exercises: We are interested in the number of years students in a particular elementary statistics class have lived in California. The information in the following table is from the entire section.


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