A useful little website

If you're even wondering about "area under the curve" for a normal curve, what "1 standard deviation above the mean" means, or anything like that, or what a Z score (standard score) of 2.3 really means, this website is really very helpful. It's nothing earth shattering, and in fact you can calculate everything it tells you by hand, or look it up in the tables in the back of just about any textbook on stats, but it's just a nifty and convenient way to get the info quickly. There are some certified geeks, I mean other than me, who I imagine could read this, so I thought I'd share with all our imaginary readers :o)