Question

Write the formulae for ongroup data of median and explain the terms in it.​

Answer 1

Answer:

Following are the steps in the calculation of median for grouped frequency distribution

Prepare a table containing three columns

Write given class intervals in column 1 and their respective frequencies in column 2.

Write cumulative frequency less than type in column 3.

Find total frequency N= ∑fi , Calculate

2

N

Find cumulative frequency less than type which is just greater than or equal to

2

N

. The corresponding class is 'median ' class

Calculate the value of median by using the formula.

Median = L + [

2

N

−c.f]

f

h