Question: Public corruption continues to be a concern. Let's examine data from the U.S. Department of Justice to explore the variability in public corruption in the

Public corruption continues to be a concern. Let's examine data from the U.S. Department of Justice to explore the variability in public corruption in the years 1990 and 2009. All the numbers below are of those convicted of public corruption.
Number of Public Corruption Convictions by Year

a. What is the range of convictions in 1990? In 2009? Which is greater?
b. What is the mean number of convictions in 1990 and 2009?
c. Calculate the standard deviation for 1990 and 2009.
d. Which year appears to have more variability in number of convictions as measured by the standard deviation? Are the results consistent with what you found using the range?

1990 2009 Govt. LevelNo of ConvictionsGovt. Level Federal State Local No. of Convictions 583 79 225 Federal 426 102 257 Local

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