When Deciding Whether or Not to Use a New Predictor

question 43

True/False

When deciding whether or not to use a new predictor, the validity coefficient, the base rate, and the selection ratio should be considered in combination, not independently.

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Definitions:

WARP

Weak Axiom of Revealed Preference, a theory in economics that assumes if a consumer prefers product A over B when both are available, then they will not choose B when A is available.

Bundle

An assortment of items or services combined and offered for sale as a complete set.

Laspeyres Price Index

A measure of inflation computed by taking the ratio of the total cost of purchasing a specified basket of goods at current prices to the cost of those same goods at base-year prices.

Base Year

A base year is a specific year against which economic or financial data are measured and compared. It often serves as a reference point for calculating indexes and growth rates.