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Solved: In Exercises, find the coefficient of variation

Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola ISBN: 9780321836960 18

Solution for problem 22BSC Chapter 3.3

Elementary Statistics | 12th Edition

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Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola

Elementary Statistics | 12th Edition

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Problem 22BSC

 

In Exercises, find the coefficient of variation for each of the two samples; then compare the variation. (The same data were used in Section 3-2.)

Parking Meter Theft Listed below are amounts (in millions of dollars) collected from parking meters by Brinks and others in New York City during similar time periods. A larger data set was used to convict five Brinks employees of grand larceny. The data were provided by the attorney for New York City, and they are listed on the DASL Web site. Do the limited data listed here show evidence of stealing by Brinks employees?

 

Step-by-Step Solution:

Solution 22BSC

Step 1 of 6</p>

For Collection Contractor was Brinks:

We know that the mean of a given set of observations obtained by adding those observations and divide that result with number of given observations. The mean amount collected from parking meters by Brinks in New York City is

Therefore, the mean amount collected from parking meters by Brinks in New York City is $1.55 million.

Step 2 of 6</p>

From the given information,

We know that variance of given set of sample value found as follows:

Therefore, the standard deviation of the given sample is.

Step 3 of 6</p>

We know that coefficient of variation for a sample found by

Therefore, the coefficient of variation for Brinks is 11.4%.

Step 4 of 6

Chapter 3.3, Problem 22BSC is Solved
Step 5 of 6

Textbook: Elementary Statistics
Edition: 12
Author: Mario F. Triola
ISBN: 9780321836960

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Solved: In Exercises, find the coefficient of variation

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