Question

The mean of 10 obsevations is 15.4 by an error, one observation is registered as 23
instead of 32, then correct mean is

Answer 1

Answer:

The mean of 10 observations is 16.3.

By error, one observation id got registered as 32 instead of 23

16.3=10x1+x2+...x10

x1+x2+...x10=163

Let λ=−32+23+x1+x2+...x10

λ=−9+163

λ=154

So, required mean is 10154=15.4