The standard error bands created by Jon Andersen in "Standard error bands" in the September 1996 STOCKS & COMMODITIES.
This script calculates the beta and alpha coefficients of the linear regression. First, it creates the calcB and calcA functions, which refer to the beta and alpha coefficients. Create calcB first, then calcA....
Original implementation idea of bands by:
Traders issue: Stocks & Commodities V. 14:9 (375-379):
Standard Error Bands by Jon Andersen
Standard Error Bands are quite different than Bollinger's.
First, they are bands constructed around a linear regression curve.
Second, the bands are based on two standard errors above and below this regression line.