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Biostatistical joke #1. It's quite serious.

re.boris at spacestar.com re.boris at spacestar.com
Tue May 30 12:59:24 EST 1995

Jokes of averaging.
#1. Average face of group of laughing and crying people is the same as average 
face of calm people. But who produces more noise?

Statistical interpretation. 
Average of non-linear function is not equal to non-linear function of average.

Biomedical interpretation. Example. 
Mortality in two groups with equal average age can be different. Group #1 
(40-50 years) and group #2 (20-70 years) have the same average age 45 years.
But mortality is a non-linear function of age...

Have you ever seen clinical trials or experimental studies that tested balance 
using anything but average values?

We'll continue... 

We are waiting for your opinion. RESEARCH SUPPORT, Inc.

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