Question

How to find the median of data using class marks and frequencies?

Answer 1

To calculate the mean of grouped data, the first step is to determine the midpoint (also called a class mark) of each interval, or class. These midpoints must then be multiplied by the frequencies of the corresponding classes. The sum of the products divided by the total number of values will be the value of the mean.


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Answer 2

Answer:

use this formula,,,,

Step-by-step explanation:

L+[(n/2-cf)/f ] x h

L= lower frequency

n= sub total of frequency

cf= current frequency

f= frequency

h= class height

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