To make color a response variable in the graph, you can specify a numeric variable whose values are indexed into the defined color range to determine the colors to use in the graph. To assign the ...

I introduce the notion of a 'control variable' which gives us a way of seeing how mental causation could be an unproblematic case of causation in general, rather than being some sui generis form of ...

Journal of the Royal Statistical Society. Series C (Applied Statistics), Vol. 40, No. 1 (1991), pp. 1-12 (12 pages) A standard combined Shewhart-cumulative score quality control scheme for controlling ...

Scientists often want to find out if changing one variable makes a difference to other variables. In many (though not all) investigations the variables are kept constant - the control variables, apart ...