Friday 22 June 2012

A study of the scores on an in plant course in management principles


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

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