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Chapter 2: Q.13 (page 127)

What does the frequency column in Table 2.42sum to? Why?

Short Answer

Expert verified

The frequency columns sums up to65.

Step by step solution

01

Content Introduction

The completed table of randomly selected car salesperson is

02

Content Explanation

The frequency columns sums up to 14+19+12+9+11=65. The randomly selected 65car salespersons were divided into different groups to depict the number of cars sold by each sales person in one week and it is shown under frequency table.

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Most popular questions from this chapter

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 100shoppers. 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.

Use the following information to answer the next three exercises: State whether the data are symmetrical, skewed to the left, or skewed to the right.

16;17;19;22;22;22;22;22;23

2.42What is the difference between relative frequency and frequency for each data value in Table 2?

On a baseball team, the ages of each of the players are as follows:

21;21;22;23;24;24;25;25;28;29;29;31;32;33;33;34;35;36;36;36;36;38;38;38;40

Use your calculator or computer to find the mean and standard deviation. Then find the value that is two standard deviations above the mean.

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.

First quartile = _______
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