Question

The mean of 8 observations is 40. If each observation is divided by 2, then the mean of the new
data set is ..................
​

Answer 1

Step-by-step explanation:

We know that Mean=Sum of terms/number of terms

As given

Mean=40 and number of terms=8 so

40=Sum of terms/8

Sum of terms=40*8=320 now by increasing each term by 5 sum of terms will increase by 8*5=40 so new Sum will be

Sum of terms=320+40=360

Again solving to find mean

Mean=Sum of terms/number of terms

Mean=360/8=45