# What is the advantages and disadvantages of mean, median and mode?

##### 1 Answer

Dec 6, 2017

**Mean** = Sum of all values / number of values.

Mean is typically the best measure of central tendency because it takes all values into account. But it is easily affected by any extreme value/outlier. *Note that Mean can only be defined on interval and ratio level of measurement*

**Median** is the mid point of data when it is arranged in order. It is typically when the data set has extreme values or is skewed in some direction. *Note that median is defined on ordinal, interval and ratio level of measurement*

**Mode** is the most frequently occurring point in data. It is best for nominal data set in which both median and mode are undefined. *Note that mode is defined on nominal, ordinal, interval and ratio level of measurement*