  # Proportion of Variance: Simple Definition and Examples of Use

## What is Proportion of Variance?

“Proportion of variance” is a generic term to mean a part of variance as a whole. For example, the total variance in any system is 100%, but there might be many different causes for the total variance — each of which have their own proportion associated with them.

## Different Uses

The term proportion of variance is used in a wide range of statistical concepts and procedures. Although it generally means the variance is proportioned between several factors, variables, or effects, it’s exact definition depends on where you’re using it. For example:

References:
IBM Knowledge Center (SPSS Statistics v 23.0.0). Prop. of Var. Explained. Retrieved May 28th 2017 from: https://www.ibm.com/support/knowledgecenter/SSLVMB_23.0.0/spss/tutorials/pls_carsales_pve.html

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