Question

sum of 12 observations is 256,if one of the observation 14 is deketed find the mean of remaining observation​

Answer 1

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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