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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 From Previous Years, Rescored in 2005, by Block and Item, Grade 4 Science 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 from 2000, rescored in 2005, by block and item, grade 4 science combined national and state main assessment: 2005
Block Item Range of response codes Sample size Percent exact agreement Cohen's Kappa Intraclass correlation
S3 K031001 1–3 3,500 94 0.88
K031002 1–3 3,900 85 0.78
K031003 1–3 3,700 83 0.65
K031004 1–2 4,200 88 0.74
K031005 1–3 4,000 78 0.68
K031006 1–3 3,400 88 0.89
K031007 1–3 4,100 83 0.85
S4 K031101 1–2 3,100 97 0.88
K031102 1–2 2,500 95 0.87
K031103 1–2 2,700 93 0.86
K031104 1–2 2,900 98 0.90
K031105 1–3 2,800 99 0.97
K031107 1–4 2,900 92 0.95
S6 K031301 1–4 2,800 91 0.87
K031309 1–4 2,500 90 0.90
K031302 1–3 2,800 89 0.54
K031303 1–3 2,400 89 0.91
K031304 1–3 3,500 92 0.92
† 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 Science Assessment.

Last updated 06 April 2009 (GF)

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