The following table presents the annual personhours of time lost due to traffic congestion for a group of cities for 2009. This statistic is a measure of traffic congestion.
City  Annual PersonHours Lost to traffic Congestion 

Baltimore  33  
Boston  28  
Buffalo  11  
Chicago  44  
Cleveland  13  
Dallas  32  
Detroit  23  
Houston  37  
Kansas City  14  
Los Angeles  40  
Miami  26  
Minneapolis  27  
New Orleans  20  
New York  24  
Philadelphia  26  
Phoenix  23  
Pittsburgh  23  
San Antonio  19  
San Diego  23  
San Francisco  30 27 

Seattle  
Washington, D.C.  41 
Source: U.S. Bureau of the Census. 2012. Statistical Abstract of the United States: 2012. Table 1099. Available at http://www.census.gov/prod/2011pubs/12statab/trans.pdf
a.
To Calculate:
The mean and median of the distribution.
The formula to calculate mean is given by,
The mean is given by,
Substitute 22 for
b.
To Compare:
The mean and median.
c.
To Calculate:
The mean and median of the distribution after removing the data of the city Chicago.
d.
To Report:
The mean and median in a research format
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