paramS1 {lazy.irt}

R Documentation

Small Item Parameter Data Frame # 1. (3 items)

Description

Small Item Parameter Data Frame # 1. (3 items)

Usage

paramS1

Format

A data frame with 4 rows and 7 variables

name

character: Item name

type

character: Item type

ncat

num: # of categories: 2 for binary items

p1

num: First item parameter: slope

p2

num: 2nd item parameter

p3

num: 3rd item parameter

p4

num: 4th item parameter

Details

name type ncat  p1  p2   p3   p4
  Q1    B    2 0.9  0.0  NA   NA
  Q2   B3    2 1.0  0.0 0.2   NA
  Q3    G    4 1.0 -2.0 0.0  2.0
  Q4    P    4 0.8 -2.0 0.0  2.0
  

item type = "B" or "B3" or "G" or "P"
ncat is the max # of categories

Source

Generated by author.

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