Category

Multi-Bar Functions

Description

Standard error of predicted vs. actual values in a regression

Syntax

StdErr(expr, {expr2,} count)

Parameters

expr - data series formula (Y values)

expr2 - optional second data series formula (X values -- a linear series from 1 to count is used if omitted)

count - lookback period

Notes

For each value in the expr data series formula, the Slope and YInt are calculated for count values.

Each expr value is then compared to the predicted value of that point on the line thus defined.

The StdError is the square root of the sum of squared differences between actual expr values and LinReg predictions.

This function is equivalent to =STEYX in Excel.

Example

Example

SE20: StdErr(C, 20)

Measures how closely price follows a linear trend over 20 bars.

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