Question

The arithmetic mean of 7 observations is 3.2, the arithmetic mean of the new 7 observation obtained by dividing each observation by 4 is:

Answer 1

Answer:

0.8

Step-by-step explanation:

Arithmetic mean =sum of observations /total number of observations

Let sum of observations be x

3.2=x/7

X=3.2×7

X=22.4

If we divide all observations by 4,then total also will be divided by 4

X=22.4/4

X=5.6

Mean = 5.6/7

Mean =0.8

The new mean obtained is 0.8