Math, asked by AnkitMaiti, 2 months ago

The mean of 9, 12,13,x,21 and 17 is 15, find the value of x

Answers

Answered by fhreyaleerajkumari

0

Answer:

18

Step-by-step explanation:

Mean= Sum of observations / No. of observations

= 9+12+13+x+21+17 / 6

= 72+x / 6

Mean= 15

15 x 6 = 72 + x

90 = 72 + x

x = 90 - 72

= 18

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