Steps :

1. Arrange the data in ascending or descending order of magnitude.

2. Find the cumulative frequencies.

3. Apply the formula :

   1. If 'n' = (odd) then,

      Median = size of item

   2. If 'n' = (even) then,

      Median =

Size          :   8   10    12    14    16    18    20

Frequency :  7     7     12     28     10    9    6

Index

4.1 Introduction
4.2 Arithmetic Mean
4.3 Properties of Arithmetic Mean
4.4 Median
4.5 Mode
4.6 Empirical relation between mean, median & mode

Chapter 5