Bell Curves - graphing calculator for the normal distribution function

* Build interactive graphs of the probability density function (PDF) the cumulative distribution function (CDF) for normal distributions
* Fit normal and lognormal sample data from CSV files
* Visually compare sample distribution with PDF function
* Solve PDF/CDF equations graphically
* Calculate the sigmas and quantiles

Bell Curves is an interactive graphing tool and calculator for the bell curve probability density function.