paramB1 {lazy.irt}

R Documentation

Binary Item Parameter Data Frame # 1. (18 items)

Description

Binary Item Parameter Data Frame # 1. (18 items)

Usage

paramB1

Format

A data frame with 18 rows and 6 variables

name

character: Item name

type

character: Item type

ncat

num: # of categories: 2 for binary items

p1

num: First item parameter: slope: a

p2

num: 2nd item parameter: threshold: b

p3

num: 3rd item parameter: lower asymptote: c

Details

name type ncat   p1   p2   p3
  Q1    B    2  1.0 -1.0  0.0
  Q2    B    2  1.0  0.0  0.0
  Q3    B    2  1.0  1.0  0.0
  Q4    B    2  1.0 -1.0  0.0
  Q5    B    2  1.0  0.0  0.0
  Q6    B    2  1.0  1.0  0.0
  Q7    B    2  1.3 -1.0  0.0
  Q8    B    2  1.3  0.0  0.0
  Q9    B    2  1.3  1.0  0.0
  Q10   B    2  1.3 -1.0  0.0
  Q11   B    2  1.3  0.0  0.0
  Q12   B    2  1.3  1.0  0.0
  Q13   B    2  0.7 -1.0  0.0
  Q14   B    2  0.7  0.0  0.0
  Q15   B    2  0.7  1.0  0.0
  Q16   B    2  0.7 -1.0  0.0
  Q17   B    2  0.7  0.0  0.0
  Q18   B    2  0.7  1.0  0.0
  

item type = "B"
ncat is the max # of categories

Source

Generated by author.

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