Question

The random error in the arithmetic mean of 100 observations is x;then random error in the arithmetic mean of 400 observations would be????

please don't spam .i will report ur id and all answers of urs if u do so ​

Answer 1

Explanation:

Random error in 100 observations =x

Random error in 400 obsrvation =?

If observation is increased by

′

n

′

times then random error decreases by

n

1

times therefore random error =

4

x

.

Hence, the answer is

4

x

.