BellCurve: Normal Distribution Calculator (FREE) app for iPhone and iPad
** Non-ad version available for purchase ($0.99) **
The normal curve is used in many statistical calculations. BellCurve is an easy to use calculator that finds probabilities in a normal distribution.
BellCurve consists on two views. The main view displays the normal curve, with probability of interest shaded in. Lower and upper bounds can be changed using the slider. The flipside view allows users to specify exactly the expected value (mu), the standard deviation (sigma), the lower bound (green dot) and the upper bound (red dot). Z scores are also shown.