Re: That's incorrect... - Edit 1
Before modification by Tor at 29/10/2012 10:40:49 AM
A Bell Curve is a perfectly normal distribution. Perfectly symmetrical. Otherwises it's not a Bell Curve.
Yes, but as I said, no real data is ever a perfect bell curve. When people say "it's a bell curve", they actually mean "it's reasonably well described by a bell curve".
Edit:
In fact, as the curve is truncated at zero, it can't be a perfect bell curve in any case, as one of the properties of the normal distribution is that the probability never reaches zero.