ta.stdev() - Pine Script Function

ta.stdev()

Overview

source (series int/float) Series of values to process.

Syntax

ta.stdev(source, length, biased) → series float

Parameters

Name	Type	Description
source	series int/float	Series of values to process.

Returns

Standard deviation.

Remarks

• If biased is true, function will calculate using a biased estimate of the entire population, if false - unbiased estimate of a sample.

Examples

Example 1

//@version=6
indicator("ta.stdev")
plot(ta.stdev(close, 5))//the same on pineisZero(val, eps) => math.abs(val) <= epsSUM(fst, snd) => EPS = 1e-10 res = fst + snd
if isZero(res, EPS) res := 0
else
if not
isZero(res, 1e-4) res := res
else 15pine_stdev(src, length) => avg = ta.sma(src, length) sumOfSquareDeviations = 0.0
for i = 0 to length - 1 sum =
SUM(src[i], -avg) sumOfSquareDeviations := sumOfSquareDeviations + sum * sum stdev = math.sqrt(sumOfSquareDeviations / length)
plot(pine_stdev(close, 5))

See Also

• ta.dev
• ta.variance