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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, Age 17 Reading Long-Term Trend Assessment: 2004

NAEP Technical DocumentationRange 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, age 17 reading long-term trend assessment: 2004

Block	Item	Range of response codes	Sample size	Percent exact agreement	Intraclass correlation
R21	N021203	1–5	600	84	0.91
R22	N023802	1–4	600	87	0.87
R23	N021803	1–4	600	92	0.95
R24	N022103	1–4	600	87	0.88
R25	N022405	1–4	600	94	0.91
R26	N025704	1–4	600	93	0.96
R28	N027302	1–5	600	84	0.88
R29	N027602	1–4	600	86	0.85
NOTE: 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), 2004 Reading Long-Term Trend Assessment.

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