Measures of Central Tendency

Arithmetic Mean

The Mostly used measure of central tendency is Arithmetic Mean. It is descriptive measure and often called "average". We can simply call the Arithmetic mean the "Mean".

For Example: We want to get the mean age of a group of 5 people. 

Solution:- 

                        Mean Age= 10+25+36+42+56=33.8 years

                                                        5

Properties of Mean

i)- Unique:- For any given data there is only 1 Arithmatic mean.

ii)- Simple:- Arithmatic Mean is very simple and easily computed.

iii) The Arithmatic Mean is affected by each and every value of the data. Extreme values have a great influence on the mean.