In this video we show how to use vector-valued specifications for the col= and pch= graphical parameters when calling plot() or some other high level graphical function in R in order to distinguish…
The plot() function is the ultimate generic function in R. It is highly flexible, and produces a variety of different plot types depending upon the class of the objects that it operates on and the…
In this video we continue to discuss subscripts, this time concentrating on matrices and arrays. Each dimension of these structures may be subscripted to return a sub-matrix or sub-array of the…
In this video I review the basic ideas of the one-way ANOVA, with emphasis on the model, including both common parameterizations of it: the effects version and the cell-means version. You should have…