Question

calculate the standard deviation
from the following data.
size 5 10 15 20

frequency 2 1 4 3


​

Answer 1

Answer:

To find the median class:

First add the total number of frequencies.

Here, f=10

Formula to obtain the median class =

2

(Totalnumberoffrequency+1)

So, Median class =

2

(10+1)

=5.5

Hence, the median class of 5.5 lies between the intervals 5−10.