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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 2004, by Block and Item, Age 9 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 from previous years, rescored in 2004, by block and item, age 9 reading long-term trend assessment: 2004

Block	Item	Range of response codes	Sample size	Percent exact agreement	Intraclass correlation
B8	N001527	1–6	600	78	0.82
B10	N008905	1–6	800	92	0.97
B12	N002804	1–5	800	90	0.95
B13	N003104	1–5	800	92	0.92
B14	N003704	1–4	800	90	0.91
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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