Bollinger Band - Lower

The value of the lower Bollinger Band for the arguments set.

Syntax: BBLower(Source, Length, StdDev, Interval, [Ref], [Symbol])

Source = Required.

Length = Required. Number of periods of type "Interval" in the Moving Average.

StdDev = Required. The number of standard deviations from the basis line.

Interval = Required. 

[Ref] = Optional.

[Symbol] = Optional

Comments: 

In RavenQuote the defaults are: Length = 20, StdDev = 2.

Examples:

BBBasis(Close, 20, 2, 5, 0, YHOO)

The value of the lower Bollinger Band using the Closing Price, with a 20 5-minute bar moving average for YHOO.