NAEP Analysis and Scaling - Summary Item Response Rates, Economics National Main Assessment, By Item Type and Grade: 2012

NAEP Analysis and Scaling → Initial Activities → Summaries of Item-Level Response Rates for NAEP Assessments → Summary Item Response Rates, Economics National Assessment, By Item Type and Grade: 2012

NAEP Technical DocumentationSummary item response rates, economics national assessment, by item type and grade: 2012
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. NOTE: Economics was assessed only at grade 12 in 2012. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2012 Economics Assessment.
12	Number of items	162	3	30
	Average percent missing¹	1.39	7.30	7.31
	Minimum	0.14	3.81	1.47
	Maximum	7.50	11.53	23.65
	Average percent off-task²	†	0.57	0.81
	Minimum	†	0.36	0.00
	Maximum	†	0.77	2.83
	Average weighted percentage correct	56.19	43.03	44.59

Last updated 30 June 2014 (GF)