Abstract #301703

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JSM 2002 Abstract #301703
Activity Number: 251
Type: Contributed
Date/Time: Tuesday, August 13, 2002 : 2:00 PM to 3:50 PM
Sponsor: Section on Government Statistics*
Abstract - #301703
Title: The Choice of Age Groupings May Affect the Quality of Tabular Presentations
Author(s): Carl Pierchala*+
Affiliation(s): National Highway Traffic Safety Administration
Address: 400 Seventh St., SW, Room 6125, Washington, District of Columbia, 20590, US of A
Keywords: Presentation Quality ; Frequency Tables ; Histograms ; Density ; SAS/INSIGHT® ; Motor Vehicle Crash Data
Abstract:

Data on the ages of persons are often grouped when presented in tables. However, variable bin widths are often used in setting up the groupings for age. This can lead to a variety of distortions, depending on the degree to which adjustments are made for the lack of uniformity in the bin widths of the groups. The issues are illustrated using histograms produced with SAS/INSIGHT visualization and analysis software, using data from the National Highway Traffic Safety Administration.

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Revised March 2002