Originally created 04/29/01

Fuzzy math used on school bus data

Regarding the April 20 front page article on school bus safety, did anyone else notice that the percentages cited were "drivers per violation?" This is a meaningless number, similar to "oceans per fish."

The percentages given for drivers with offenses is particularly misleading, using number of drivers with offenses divided by number of offenses.

For example, Burke County had 76 total violations, 20 total drivers, and seven drivers with offenses. That represents an average of 3.8 violations per driver (not 26 percent), and 720, or 35 percent of their drivers were offenders. How does that compare with the 9.2 percent reported? These numbers are from the Department of Education? Does this tell us anything?

Terry Bedell, Appling


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