paramCal1 {lazy.irt}

R Documentation

Small Item Parameter Data Frame for Testing cala and calr #1.

Description

This data frame contains three sets of estimated item parameters of binary items distributed across three test forms.
The item parameters were estimated independently for each form.

Usage

paramCal1

Format

A data frame with 33 rows and 8 variables.
Basically, the structure is the same as the parameter data frame
except that the first column containing the form name is added.

gfid

character: Form name

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

Details

    gfid name type ncat        p1          p2        p3
form1  QB1   B2    2 1.0000000 -1.00000000 0.0000000
form1  QB2   B2    2 1.0000000  0.00000000 0.3000000
form1  QB4   B3    2 0.8000000  1.00000000 0.2000000
form1  QB5   B2    2 1.0000000 -1.30000000 0.0000000
form1  QB6   B2    2 1.0000000  0.30000000 0.3000000
form1  QB7   B3    2 1.0000000  1.30000000 0.2000000
form1  QB8   B3    2 0.8000000  0.70000000 0.2000000
form1 QB11   B2    2 1.2000000 -1.00000000 0.0000000
form1 QB12   B2    2 1.2000000  0.00000000 0.3000000
form1 QB14   B3    2 1.0000000  1.00000000 0.2000000
form1 QB15   B2    2 0.8000000 -1.00000000 0.0000000
form1 QB16   B2    2 0.8000000  0.00000000 0.3000000
form1 QB17   B3    2 0.8000000  1.00000000 0.2000000
form1 QB18   B3    2 0.7000000  1.00000000 0.2000000
form2  QB1   B2    2 0.9736860 -2.57272092 0.0000000
form2  QB3   B3    2 0.7560111  0.04149805 0.3905005
form2  QB5   B2    2 0.7700730 -2.90974572 0.0000000
form2  QB7   B3    2 1.0288158  0.65955944 0.2237003
form2 QB11   B2    2 1.1783210 -2.51973224 0.0000000
form2 QB13   B3    2 1.0667175  0.20900095 0.4426091
form2 QB15   B2    2 0.7748544 -2.41498863 0.0000000
form2 QB17   B3    2 0.6003595  0.18576845 0.2764597
form2  QB2   B2    2 0.9845137 -1.11132899 0.3000000
form2  QB6   B2    2 0.9434385 -0.75960242 0.3000000
form3  QB2   B2    2 1.4515893  0.91079758 0.3000000
form3  QB4   B3    2 1.2179065  1.75344958 0.2100962
form3  QB6   B2    2 1.5139847  1.16847211 0.3000000
form3  QB8   B3    2 1.1706377  1.56182045 0.3502745
form3 QB12   B2    2 1.6937542  0.99698111 0.3000000
form3 QB14   B3    2 1.4473557  1.75645583 0.3786156
form3 QB16   B2    2 1.1834637  0.79398007 0.3000000
form3 QB18   B3    2 0.9699614  1.79807714 0.4093079
form3  QB1   B2    2 1.4712936  0.17616872 0.0000000

Source

Generated by author.

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