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# Measures of central tendency and variability

Some of the measures used in descriptive statistics include the measures of central tendency and measures of variability.

A measure of central tendency is a single value that attempts to describe a dataset by specifying a central position within the data. The three most common measures of central tendency are the mean, median, and mode.

A measure of variability is used to describe the variability in a dataset. Measures of variability include variance and standard deviation.

## Measures of central tendency

Let's take a look at the measures of central tendency and an illustration in the following sections.

### The mean

The mean or sample is the most popular measure of central tendency. It is equal to the sum of all ...

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