Often times, you will need to summarize a distribution. There are two basic descriptions of distributions: the average case and the variation. The average can be calculated three ways which are mean, median, and mode. The mean is the most common number of the averages (Rengert & Mattson & Henderson, 2001). The mean number of homicides in the Cincinnati neighborhoods is 3.7 homicides per neighborhood, which was determined by dividing the 198 killings in the 53 neighborhoods. The median is what divides the two cases into their individual, yet equal groups (Rengert & Mattson & Henderson, 2001). Half the Cincinnati neighborhoods have two or more homicides and half of the neighborhoods have two or less homicides. Lastly, the mode is the possessed value that is determined by the greatest number of existing cases. …show more content…
There are three common methods to calculate the spread of the homicides that are: range, inner quartile range, and standard deviation. The range is calculated by taking the lowest value from the highest value (Rengert & Mattson & Henderson, 2001). The range for Cincinnati homicides are 0 to