Question

Which average is affected most by the presence of extreme items?

Options

• median

• mode

• arithmetic mean

• none of the above

Answer 1

arithmetic mean

Explanation: 

The arithmetic mean is the most affected by the presence of extreme items. It is one of the prime demerits of the arithmetic mean. It is easily distorted by the extreme values, and also the value of arithmetic mean may not figure out at all in the series.