Question

Mean of 20 observati ons is 17 . If in
the
observations, observation 40
is replaced by
12
find the
new
mean​

Answer 1

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Answer 2

Answer:

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Question:-

Mean of 20 observations is 17. If in the observations, observation 40 is replaced by 12, find the new mean.

⇨★

Solution:

Since mean of 20 observations is 17

∴ Sum of the 20 observations = 17 × 20 = 340

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

New mean = 312/20= 15.6

⇨★ 15.6

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