NAEP Analysis and Scaling → Initial Activities → Summaries of Item-Level Response Rates for NAEP Assessments → Summary Response Rates for the NAEP 2009 Mathematics Combined National and State Main Assessment

NAEP Technical DocumentationSummary Response Rates for the NAEP 2009 Mathematics Combined National and State Main Assessment

Summary item response rates, mathematics national assessment, by item type and grade: 2009

Grade	Statistic	Multiple-choice items	Dichotomous constructed-response items	Polytomous constructed-response items
† Not applicable. 1 Missing responses includes the categories "omitted" and "not-reached." 2 An "off-task" response (constructed-response items only) is a response that is unrelated to the question and is considered inappropriate. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2009 Mathematics Assessment.
4	Number of items	108	13	39
	Average percent missing1	3.65	4.34	8.15
	Minimum	0.59	1.11	0.77
	Maximum	32.89	11.28	38.48
	Average percent off-task2	†	0.14	0.07
	Minimum	†	0.00	0.00
	Maximum	†	0.62	0.60
	Average weighted proportion correct	58.53	53.68	41.61
8	Number of items	115	17	33
	Average percent missing1	2.17	8.09	7.21
	Minimum	0.43	2.02	0.41
	Maximum	10.29	15.59	24.41
	Average percent off-task2	†	0.60	0.47
	Minimum	†	0.02	0.03
	Maximum	†	2.15	3.18
	Average weighted proportion correct	53.24	45.29	43.94
12	Number of items	235	50	80
	Average percent missing1	3.09	11.25	14.99
	Minimum	0.27	0.97	0.15
	Maximum	28.00	37.65	45.28
	Average percent off-task2	†	1.17	1.52
	Minimum	†	0.07	0.00
	Maximum	†	6.00	11.70
	Average weighted proportion correct	51.11	34.26	29.17

Printer-friendly Version