Which of the following is NOT one of the uses for regression

Which of the following is NOT one of the uses for regression analysis?

Forecasting future values of some variable based on the known values of other variables.

  
Building models that describe or explain reality.

  
None of the above (that is, these are all typical uses for regression analysis).

  
Finding the equilibrium in a zero-sum game.

  
Testing hypotheses about the impact of one variable on another.

Solution

Regression analysis is used to examine the relationship between multiple variables. It can be used to determine the dependent variable when changing one independent variable while the other independent variables remain constant (this would constitute as testing a hypothesis and forecasting future values.)