ifind: Item Fit indexes 'chi^2' and 'g^2' statistics

In takuizum/irtfun2: Some useful functions for IRT

Description

Item Fit indexes 'chi^2' and 'g^2' statistics

Usage

ifind(
  x,
  para,
  theta,
  fc = 3,
  H = 10,
  p = 0.05,
  D = 1.702,
  dot_size = 1,
  line_size = 1
)

Arguments

x	data.frame of item response data.
para	item parameter data.frame estimated by estip.
theta	theta parameter vector. This length must be same to x.
fc	a first column of item response data.frame.
H	the munber of cut point. To know how to cut, seecut2
p	p value.
D	a scale constant
dot_size	a point size of ggplot.Seegeom_point
line_size	line size of ggplot.Seegeom_path

Examples

res <- ifind(sim_data_1, sim_param$para, sim_eap$res$EAP, fc=2)
# result
res$X2
res$G2
res$ggplot

takuizum/irtfun2 documentation built on May 10, 2020, 8:30 a.m.