Question

The index is the ____________ of a piece of data.

Answer 1

An index is a composite statistic, or a compound measure that aggregates multiple indicators. It is a measure of changes in a representative group of individual data points.

Step-by-step explanation:

Answer 2

An index is a copy of selected columns of data, from a table, that is designed to enable very efficient search. An index normally includes a "key" or direct link to the original row of data from which it was copied, to allow the complete row to be retrieved efficiently.