The average mileage in miles per gallon (mpg) of 15 different brands of snowmobiles with a 2000 cc engine is listed below: XXXXXXXXXX XXXXXXXXXX15 14 a) Calculate the mean, median, and model b) If the...

The average mileage in miles per gallon (mpg) of 15 different brands of snowmobiles with a 2000 cc engine is listed below:

14 15 12 11 16 14 15 13 12 11 13 17 12 15 14

a) Calculate the mean, median, and model

b) If the values indicated above are increased by 3 mpg due to an enhanced design of a newly introduced fuel injection system, calculate all the requested values in part a.