The Square of Spearman's Rho Is the Proportional Reduction in Error

question 19

Multiple Choice

The square of Spearman's rho is the proportional reduction in error when predicting

• A)rank on one variable from rank on the other variable compared to predicting rank while ignoring the other variable.
• B)the rank of a case from its score.
• C)rank on gamma vs.rank on phi.
• D)score on X while ignoring Y.

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Definitions:

Pure Strategies

In game theory, a pure strategy is an action chosen by a player where they select a specific move to follow in every possible situation within a game.

Dominant Strategy

A strategy in game theory that yields the best outcome for a player, regardless of what the other players do.

Payoff

The gain or loss that an investor or a player in a game receives as a result of a particular action or decision.

Nash Equilibrium

A concept in game theory where no player can benefit by changing their strategy if the strategies of the other players remain unchanged.