Question

Find the mean and median of all positive factors of 72

Answer 1

Factors of 72 = 1, 2, 3, 4, 6, 8, 9, 12,18, 24, 36, 72
Mean of factors of 72 = 1+2+3+4+6+8+9+12+18+24+36+72
                                                               12
                                   =                    195/12
                                   =                      16.25
Median of factors of 72 = 1/2(n/2 + n/2+1)
                                      = 1/2 (12/2 + 12/2+1)
                                      = 1/2 (6th term + 7th term)
                                      =  1/2(8+9)
                                      = 8.5

Answer 2

All factors of 72 are 2,2,2,3,3,
So there mean is 12/5=2.4
And there median is 2