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

Answer»

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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