Answer:
It is a single measure that weights multiple indicators and provides a measure of overall expectation.
Explanation:
Index when Applied to forecasting is the use of judgmental indexes generally referred to as an “index method” or an “experience table.” Index techniques have been utilized for several types of forecasting problems, including (but not limited to) prediction the success rate of prisoners seeking parole.
It could also be said to be a single measure that weights several indicators and provides a measure of overall expectation.