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A study of the scores on an in plant course in management principles and the years of service of the employees enrolled in the course yielded the following statistics: Test Scores: mean=100 variance = 225 Years of Service: mean=5 variance = 81 Of test scores and years of service, which measure has the greater dispersion?

A. Test scores
B. The short-run effects of those changes are always more beneficial to society than are the long-run effects.
C. It is impossible to tell.
D. Years of service

 

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