ABSTRACT
Average and mean are interchangeably used in everyday life. Average is the synonym for the central tendency. There are various types of central tendencies, such as mean, mode and median.
Mean
The procedure for calculating mean is very simple; sum of all individual observations divided by the sum of number of observations. There are several types of means, such as arithmetic mean, geometric mean and harmonic mean. Let us work out the example given in Table 3.1 to familiarise the reader with the calculation procedure of these means.
