the mean of 5 observations is 10 if each observation is decreased by 3 then the mean of new observations is
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Answer:
19.2
Step-by-step explanation:
given mean of 10 observations is 24.5
mean = 24.2
No' of observations = 10
mean=
No’ of observations
sum of observations
24.2×10= sum of observations
⇒242
if each observations is described by 5
So
decreasing sum ⇒10×5=50
New sum of total observations = 242−50=192
New mean =
10
192
=
No’s of observations
New sum of total observations
=19.2
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