att.plot {cdcatR} | R Documentation |
This function generates a plot monitoring the attribute mastery estimates (x-axis: Item position, y-axis: Mastery posterior probability estimate). If a parametric CD-CAT has been conducted, posterior probabilites (with confident intervals) of mastering each attribute are plotted. If a nonparametric CD-CAT has been conducted (and pseudo-probabilites have been computed), both nonparametric classification and pseudo-posterior probabilites (with confident intervals) of mastering each attribute are plotted. Pseudo-posterior probabilities is a method in progress. Caution in the interpretation is advised. Colors are used in the plots to indicate mastery (green), non-mastery (red), or uncertainty (blue).
att.plot(cdcat.obj, i, k = NULL)
cdcat.obj |
An object of class |
i |
Scalar numeric. It specifies the examinee to be plotted |
k |
Numeric vector. It specifies the attribute/s to be plotted. Default is |
att.plot
returns a plot of class ggplot
.