icrfB {lazy.irt}R Documentation

Calculation of Item Response Function of Binary Logistic Items

Description

Calculation of Item Response Function of Binary Logistic Items

Usage

icrfB(param, theta, maxZ = 700, zero = 0, smallP = 0, print = 0,
  plot = 0)

Arguments

param

Item Parameter Data Frame

theta

Discrete theta values

maxZ

Maximum value of the argument to logistic function

zero

= 0 to exclude the xzero-th category from output

smallP

Minimum value of probability

print

= 1 to print result

plot

= 1 to plot result

Value

P length(theta) x nitems ICRF matrix when zero=0
length(theta) x 2*nitems ICRF matrix when zero=1


[Package lazy.irt version 0.1.3 Index]