Step Deviation Method

Q.

What are the advantages and disadvantages of standard deviation ?

Q. The scores of a student in six subjects are 22, 16, 25, 7, 13, 6. Find the mean score using step deviation method taking 16 as the assumed mean.

1. 14.5
2. 12
3. 16
4. 16.5

Q. The runs scored by a batsman in a one-day series are respectively 32, 57, 37, 22 and 67. Find the mean score using step-deviation method using 42 as the assumed mean.

1. 43
2. 39
3. 41
4. 45

Q.

In the ___ method of calculating mean, we divide the deviations by a common factor to simplify calculations.