sum of 12 observations is 256,if one of the observation 14 is deketed find the mean of remaining observation
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Step-by-step explanation:
Given,
No. of observations = 12
Sum of observations = x
Arithmetic mean = x/12
=> 256 = x/12
=> 256(12) = x
=> 3072 = x
If 14 is removed from the observations,
No. of observations = 11
Sum of observations = 3072-14
= 3058
Arithmetic mean = 3058/11 = 278
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