Question

28. Mean of 20 observations is 17. If in the obsenations obsenation 40 is replaced by 12. find the nex
mean.​

Answer 1

Answer:

Since mean of 20 observations is 17

Sum of the 20 observations = 17 x 20 = 340

New sum of 20 observations = 340 – 40 + 12 = 312

New mean=312 / 20 =15.6

Step-by-step explanation:

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