[R] Discriminative power (Trennschärfe) calc ulations with R

Hi, currently, i am a bit lost. i want to calculate the discriminative power of items in my questionnaire. i have found the psych package which should contain that sort of thing, but i cant find it in there. by what name does it go? it probably does not help that i have got onlygerman books on the

[R] Axes crossing at origin

ewdata) normy2=normpdf(y2,16.5,0.045) normy2=normy2/max(normy2)*-.3e-10+max(newdata) lines(normy1,y1,col="#FF") lines(normy2,y2,col="#FF") dev.off() Thanks, Markus Nenniger [[alternative HTML version deleted]] __ R-help