Math, asked by hemalatapatel2511, 12 hours ago

The mean of 80 observations is 26.5. If each observation is added with 3.5 and then divided by 3, find the new mean.

Answers

Answered by ayushibarik

0

mean of 15 observations = 18

Sum of 15 observations = 18×15 = 270

If each observation is multiplied by 3

Sum of 15 observations = 18×15×3 = 810

New Mean =

15

810

= 54

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