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.
An independent variable is the variable that is changed in a scientific experiment. Independent variables are the variables that the experimenter changes to test their dependent variable. For example, a scientist is testing the effect of light and dark on the behavior of moths by turning a light on and off.he independent variable is the amount of light and the moth's reaction is the dependent variable. A change in the independent variable directly causes a change in the dependent variable.