median is the middle value, since there is an even number, add the 2 middle numbers and divide by 2
median = 9 +17 = 26/2 = 13
mode is the number that is repeated most often
mode = 6
mean is the average of all the numbers, when added they equal 276
276/12 = 23
mean = 23
5% trimmed mean = 218 /10 = 21.8
the averages are statistics since the points of a football game can vary