Ohio Resource Center
Assessments
NAEP Assessment Item, Grade 12: Find Average of Data in Graph
Discipline
Mathematics
7, 8, 9, 10, 11, 12
Professional Commentary

Students are asked to determine the average of data given in a frequency bar graph. They have the option of using a calculator. This constructed-response question is a sample test item used in grade 12 in the 1992 National Assessment of Educational Progress (see About NAEP). The URL link (above) takes the user directly to the NAEP test item, with access to performance data by various subgroups of students, a scoring guide, sample student responses, and a discussion of the content on which the item is based. The NAEP website allows users to build their own printable database of test items by clicking on Add Question in the upper right hand corner of the screen. NAEP Reference Number: 1992-12M7, No. 12. (sw)

Ohio Mathematics Academic Content Standards (2001)
Data Analysis and Probability Standard
Benchmarks (5–7)
E.
Collect, organize, display and interpret data for a specific purpose or need.
F.
Determine and use the range, mean, median and mode to analyze and compare data, and explain what each indicates about the data.
Benchmarks (8–10)
A.
Create, interpret and use graphical displays and statistical measures to describe data; e.g., box-and-whisker plots, histograms, scatterplots, measures of center and variability.
D.
Find, use and interpret measures of center and spread, such as mean and quartiles, and use those measures to compare and draw conclusions about sets of data.
Benchmarks (11–12)
A.
Create and analyze tabular and graphical displays of data using appropriate tools, including spreadsheets and graphing calculators.