What is a bell-curve distribution?
A bell-curve distribution is represented by the shape of a bell and indicates normal distribution. It occurs naturally in many situations especially while analyzing financial data. The top of the curve shows the mode, mean and median of the data and is perfectly symmetrical.
The key characteristics of a bell-shaped curve are :
* The empirical rule says that approximately 68% of data lies within one standard deviation of the mean in either of the directions.
* Around 95% of data falls within two standard deviations and
* Around 99.7% of data fall within three standard deviations in either direction.
