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.
Independent and dependent variables are the variables that change  during the course of an experiment. An example might be an  experiment on how temperature affects plant gr â¦ owth. Changing the  temperature is the independent variable, while the level of plant  growth that results is the dependent variable.