|Grade||Statistic||Multiple-choice items||Dichotomous constructed-response items||Polytomous constructed-response items|
|† Not applicable.
1 Missing responses include the categories "omitted" and "not reached."
2 An "off-task" response (constructed-response items only) is a response that is unrelated to the question.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2010 Arts (Music) Assessment.
|8||Number of items||48.00||12.00||49.00|
|Average percent missing1||2.99||14.50||11.44|
|Average percent off-task2||†||2.84||0.99|
|Average weighted proportion correct||57.51||40.13||34.44|