Composite (finance)

A composite{{Cite web |title=Composite |url=https://www.investopedia.com/terms/c/composite.asp |access-date=2016-05-19 |website=Investopedia |language=en}} or a composite index{{Cite web |title=Composite Index: Definition, Types, and Examples |url=https://www.investopedia.com/terms/c/compositeindex.asp |access-date=2016-05-19 |website=Investopedia |language=en}} is a combination of equities or indexes intended to measure the overall market performance over time.

A composite index may also be used in the natural or social sciences to summarize complex or multidimensional data or redundant measures. An example of a composite index in the social sciences is used in the European Lifelong Learning Indicators (ELLI) project.{{Cite journal |last1=Greco |first1=Salvatore |last2=Ishizaka |first2=Alessio |last3=Tasiou |first3=Menelaos |last4=Torrisi |first4=Gianpiero |date=2019-01-01 |title=On the Methodological Framework of Composite Indices: A Review of the Issues of Weighting, Aggregation, and Robustness |url=https://doi.org/10.1007/s11205-017-1832-9 |journal=Social Indicators Research |language=en |volume=141 |issue=1 |pages=61–94 |doi=10.1007/s11205-017-1832-9 |s2cid=255002738 |issn=1573-0921}}