1.

The mean of 10 observation is 19.8.if one of the observation 12 is noted instead of 21 then find correct mean

Answer»

ANSWER:

Step-by-step explanation:

Let the MEAN be Y

y/10 = 15

y = 150

Real SUM= 150 - 5 = 145

Real mean = 145/10 = 14.5

i hope my answer will help you



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