Question

Find the average of
8,11,14,13,14, 9,15

Answer 1

Median

Total obs. = 7

• if odd —

Average = (n + 1 )/2

• n = no. of obs.

Average = 7 + 1 /2

= 8/2 = 4th obs.

=> 13

Mean

= Sum of obs./ Total obs.

= 8,11,14,13,14,9,15/7

= 84/7

=> 12

Answer 2

12

Explanation:

(8+11+14+13+14+9+15)/7 = 12