# Moment

In statistics, a moment is a measure of the expected deviation from the mean. The most important example of a moment is the variance.

Moment is a college-level concept that would be first encountered in a probability and statistics course.

### Examples

Mean: | In statistics, a mean is quantity corresponding to one of possibly several different definitions of the "average" of a set of values, such as the arithmetic, geometric, or harmonic mean. In the absence of additional context, the term "mean" most commnly refers to the arithmetic mean (i.e., the average). |

Standard Deviation: | The standard deviation is a statistic defined as the square root of the variance that measures how spread out a set of data is. |

Variance: | In statistics, variance is the measure of the expected deviation from the mean. The square root of the variance is the standard deviation. |

### Prerequisites

Integral: | An integral is a mathematical object that can be interpreted as an area or a generalization of area. Integrals and derivatives are the fundamental objects of calculus. |

Probability: | Probability is the branch of mathematics that studies the possible outcomes of given events together with the outcomes' relative likelihoods and distributions. |