Short Name: stdDev
Definition: Given an array of values, returns the statistical standard deviation. Given a number, returns an array of standard deviations of close values over “number” periods.
Usage: stdDev(array) or stdDev(20) or stdDev or stdDev(array,number)
Objective:
- Returns the standard deviation of values passed as parameter, if the parameter is an array
- Returns an array of standard deviations of close values, if the parameter is a number
- Returns an array of standard deviations of array values if there are two parameters, an array and a number
- Returns an array of values.
Note:
Examples:
- stdDev(array) returns the standard deviation for the array
- stdDev(50) returns a mobile array of standard deviations of close values, over 50 periods
- stdDev is equivalent to stdDev(20)
- stdDev(rsi(14),20) rest urns an array of standard deviations of RSI