NAEP Analysis and Scaling → Initial Activities → Summaries of Response Rates → Summary Response Rates for the NAEP 2005 Mathematics Assessment

## Summary Response Rates for the NAEP 2005 Mathematics Assessment

The tables below provide relevant summary statistics for the 2005 mathematics assessment.

Number of items, by item type and grade, mathematics combined national and state main assessment: 2005
Grade Multiple-choice items Dichotomous constructed-response items Polytomous constructed-response items
4 109 27 35
8 126 23 33
12 127 24 36
NOTE: Partially correct answers are reflected in the percentages for polytomous constructed-response items.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2005 Mathematics Assessment.

Average percentage missing, by item type and grade, mathematics combined national and state main assessment: 2005
Grade Statistic Multiple-choice items Dichotomous constructed-response items Polytomous constructed-response items
4 Average percentage missing 3.82 4.68 10.85
Minimum 0.57 0.78 0.92
Maximum 35.29 10.72 42.09
8 Average percentage missing 3.47 5.83 10.88
Minimum 0.48 1.00 2.07
Maximum 32.05 42.37 36.49
12 Average percentage missing 3.90 13.20 17.14
Minimum 0.82 2.24 0.51
Maximum 31.88 35.72 47.57
NOTE: Missing responses includes the categories "omitted" and "not-reached". Partially correct answers are reflected in the percentages for polytomous constructed-response items.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2005 Mathematics Assessment.

Average percentage off-task, by item type and grade, mathematics combined national and state main assessment: 2005
Grade Statistic Dichotomous constructed-response items Polytomous constructed-response items
4 Average percentage off-task 0.05 0.04
Minimum # #
Maximum 0.29 0.43
8 Average percentage off-task 0.09 0.07
Minimum 0.01 #
Maximum 0.60 0.36
12 Average percentage off-task 0.50 0.41
Minimum # #
Maximum 3.39 1.23
# Rounds to zero.
NOTE: An "off-task" response (constructed-response items only) is a response that is unrelated to the question and is considered inappropriate. Partially correct answers are reflected in the percentages for polytomous constructed-response items.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2005 Mathematics Assessment.

Average weighted percentage correct, by item type and grade, mathematics combined national and state main assessment: 2005
Grade Multiple-choice items Dichotomous constructed-response items Polytomous constructed-response items
4 59.21 55.86 43.12
8 56.49 57.99 40.75
12 51.41 33.58 33.29
NOTE: Partially correct answers are reflected in the percentages for polytomous constructed-response items.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2005 Mathematics Assessment.

Last updated 18 February 2009 (GF)