Medicine

[JohnP]

A great new way to search and I hope the engine will "learn"
Have a look at "C-reactive protein" in the Health section - the lower limit of one standard deviation below the mean is a negative concentration. Obviously impossible. This test like many in medicine are not normally distributed. Better to display Median with inter-quartile ranges.
Good luck!

[sindark]

Good point. One must always be careful when using normal curves for statistical analysis. They certainly don't work for all distributions.

[Zippie98]

thanks, that helped me a lot!
regards,
chantal