The crime is murder in these novels, and the plots include accessories such as floor plans, maps, and railway timetables. The appeal of Golden Age fiction is the challenge of the intellectual game.
exogenous variables. (mathematics). In a mathematical model, the independent variables, which are predetermined and given outside the model. 1  Facebook. 2  Twitter.
The independent variable is the amount of light and the moth's reaction is the dependent variable. In a study to determine the effect of temperature on plant pigmentation, the independent variable (cause) is the temperature, while the amount of pigment or color is the dependent variable (the effect).