Question

8,15,10,12,20,13,7,25,15,20,20,9,20,25,15 find mean, median and mode

Answer 1

So, now lets arrange all the numbers in ascending order

7, 8, 9, 10, 12, 13, 15, 15, 15, 20, 20, 20, 20, 25, 25

Mean = 7 + 8 + 9 + 10 + 12 + 13 + 15 + 15 + 15 + 20 + 20 + 20 + 20 + 25 + 25

= 234/15 = 15 9/15 = 15.6

Median = n+1 / 2 where n is number of terms = 15 + 1 / 2 = 16/2 = 8th term

= 15

Mode = 20 as it is repeated most number of times.

Hope it helps

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