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NAEP Analysis and Scaling → Initial Activities → Constructed-Response Interrater Reliability → Range of Response Codes, Percent Exact Agreement, and Cohen's Kappa or Intraclass Correlation for the Constructed-Response Items Used in Scaling, by Block and Item, Grade 8 Mathematics Combined National and State Main Assessment: 2005
Range of response codes, percentage exact agreement, and Cohen's Kappa or intraclass correlation for the constructed-response items used in scaling, by block and item, grade 8 mathematics combined national and state main assessment: 2005
Block Item Range of response codes Sample size Percent exact agreement Cohen's Kappa Intraclass correlation
M3 M019901 1–3 1,600 99 0.98
M020101 1–2 1,600 99 0.98
M047301 1–4 1,600 99 0.95
M075401 1–3 1,600 95 0.94
M075601 1–3 1,600 96 0.98
M076001 1–5 1,300 90 0.91
M4 M046001 1–5 1,600 100 0.99
M046601 1–4 1,600 97 0.94
M046801 1–5 1,600 100 0.99
M046901 1–5 1,600 100 0.99
M053001 1–2 900 97 0.88
M066601 1–3 1,600 95 0.96
M067201 1–3 1,500 85 0.82
M068003 1–3 1,400 100 1.00
M068005 1–3 1,500 97 0.97
M068006 1–3 1,400 97 0.98
M068008 1–3 1,400 95 0.93
M086301 1–5 1,000 96 0.98
M093601 1–3 1,400 98 0.96
M5 M019701 1–2 1,600 99 0.97
M020001 1–2 1,500 99 0.98
M047901 1–3 1,400 99 0.99
M053101 1–5 1,300 95 0.97
M066301 1–3 1,500 97 0.93
M066501 1–3 1,500 96 0.97
M067901 1–3 1,400 98 0.98
M085701 1–3 1,600 98 0.96
M085901 1–3 1,500 94 0.93
M6 M141301 1–4 1,500 98 0.99
M141601 1–2 1,500 87 0.71
M141901 1–5 1,400 90 0.94
M7 M144201 1–2 1,600 99 0.98
M144601 1–3 1,500 95 0.95
M144901 1–4 1,500 93 0.97
M145101 1–4 1,200 99 0.99
M8 M020901 1–2 1,500 93 0.86
M021001 1–2 1,600 99 0.99
M073601 1–5 1,200 88 0.94
M092401 1–3 1,600 97 0.95
M092601 1–3 1,500 98 0.96
M9 M013131 1–2 1,500 99 0.98
M052401 1–2 1,500 93 0.85
M072901 1–3 1,500 95 0.96
M073501 1–3 1,500 98 0.98
M075301 1–3 1,600 96 0.95
M075801 1–3 1,300 86 0.89
M093801 1–5 1,000 95 0.98
M10 M142801 1–2 1,400 99 0.99
M143201 1–2 1,500 99 0.99
M143501 1–5 1,500 86 0.93
M11 M106301 1–2 1,600 99 0.99
M106901 1–2 1,500 92 0.80
M107501 1–2 1,500 100 0.99
M12 M110201 1–2 1,600 99 0.97
M110501 1–3 1,500 91 0.92
M111801 1–3 1,500 93 0.95
† The intraclass correlation is not reported for dichotomously scored items; Cohen's Kappa is not reported for polytomously scored items.
NOTE: Cohen's Kappa is a measure of reliability that is appropriate for items that are dichotomously scored. The intraclass correlation coefficient is most appropriate for items with more than two categories.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2005 Mathematics Assessment.

Last updated 27 October 2009 (GF)

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