## Elementary Statistics (12th Edition)

The mean can be counted by summing all the data and dividing it by the number of data: for white drivers: $\frac{0.7+2.2+...+1.39}{50}=1.184$. The median is the average of the 1 or 2 (here 2) middle data:(1.22+1.25)/2=1.235. 7.0 is an outlier because it is a lot more than the valus in the Data Set.