Standard Deviation

A stock with a smaller Standard Deviation of price values would, of course, be less volatile than a stock with a larger Standard Deviation of price values.

Parameters

1. Standard Deviation - How many standard deviations the upper (and lower) bands should be plotted above (and below) the moving average.

2. Type - Which type of moving average to use when calculating the Standard Deviation. Simple, Exponential, or otherwise.

3. Field - Which price field to use to calculate the Standard Deviation (eg. Close Price)

4. Period - How many periods (eg. days) to lookback when calculating the moving average (ie. the middle band)