# 2. Speaking of violence in Chicago, the table below shows the number of murders in Chicago from2001 through 2012. Find the mean and the median number of murders over this time period.Why are these two numbers so different for these data? Look up these terms if you don'tremember what they mean.TABLE 1.1 Violence in ChicagoYear20012002 2003 2004 200520062007200820092010 20112012Murders6676566014514714485134594364355063. Suppose you wanted to use a chart to summarize the above data about murders in Chicago. Woulda bar chart ora histogram be more appropriate? Defend your answer, and use the space below toconstruct the chart you've chosen. If you don't remember the difference between the two types ofcharts, look it up.10BEYOND THE NUMBERS 1 3

Question

I need the answer to number 2.

Step 1

Mean:

The arithmetic mean (also called the average) is the most commonly used measure of central tendency. It is calculated by summing up the observed numerical values of a variable in a set of data and then by dividing the total by the number of observations involved.

Obtaining the Mean:

The mean for the given data can be obtained by entering the formula “=AVERAGE(A2:A13)” in EXCEL software.

The EXCEL output is shown below:

Step 2

Median:

The median is the middle-most observation in an ordered (in an ascending or descending order) data set. For an odd number of observations, n in the data set, the median is the observation in the (n + 1)/2th position. For an even number of observations, n in the data set, the median is the observation in the average of the observations in the (n/2)th position and the (n/2 + 1)th position.

The median of ...

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