Standard error bands for MetaStock â ¢ for Windows

Standard error bands for MetaStock â ¢ for Windows
For interpretation refer to the article "The standard error bands" in the September 1996 issue of TASC, written by John Anderson.
21 Upper Band period (smoothed):
Mov ((21 * Sum (Cum (1) * C, 21) - Sum (Cum (1), 21) * Sum (C, 21)) / (21 * Sum (Pwr (Cum (1), 2) 21) - Pwr (Sum (Cum (1), 21), 2)) * Cum (1) + (Mov (C, 21, S) - Mov (Cum (1), 21 C) * (21 * Sum (Cum (1) * C, 21) - Sum (Cum (1), 21) * Sum (C, 21)) / (21 * Sum (Pwr (Cum (1), 2), 21) - Pwr (Sum (Cum (1), 21), 2))) +2 * (sqrt (((Sum (Power (C, 2), 21) - (Power (Sum (C, 21), 2) / 21)) - ((Sum (Cum (1) * C, 21 ))-(( Sum (Cum (1), 21) * Sum (C, 21) / 21))) / ((Sum (Power (Cum (1) 2), 21)) - (Power (Sum (Cum (1), 21), 2) / 21)) * ((Sum (Cum (1) * C, 21 ))-(( Sum (Cum (1) 21) * Sum (C, 21) / 21)))) / 19)), 3, C)
21 period Lower Band (smoothed):
Mov ((21 * Sum (Cum (1) * C, 21) - Sum (Cum (1), 21) * Sum (C, 21)) / (21 * Sum (Pwr (Cum (1), 2) 21) - Pwr (Sum (Cum (1), 21), 2)) * Cum (1) + (Mov (C, 21, S) - Mov (Cum (1), 21 C) * (21 * Sum (Cum (1) * C, 21) - Sum (Cum (1), 21) * Sum (C, 21)) / (21 * Sum (Pwr (Cum (1), 2), 21) - Pwr (Sum (Cum (1), 21), 2))) - 2 * (sqrt (((Sum (Power (C, 2), 21) - (Power (Sum (C, 21), 2) / 21)) - ((Sum (Cum (1) * C, 21)) - ((Sum (Cum (1), 21) * Sum (C, 21) / 21))) / ((Sum (Power (Cum (1) 2), 21)) - (Power (Sum (Cum (1), 21), 2) / 21 ))*(( Sum (Cum (1) * C, 21)) - ((Sum (Cum (1) 21) * Sum (C, 21) / 21)))) / 19)), 3, C)
21 period R2 (smoothed):
Mov ((Pwr (Corr (Cum (1), C 21.0), 2)), 3, C)
21 period Regression Slope:
(((Sum (Cum (1) * C, 21)) - (Sum (Cum (1), 21) * Sum (C, 21) / 21)) / ((Sum (Power (Cum (1), 2 ), 21)) - (Power (Sum (Cum (1), 21), 2) / 21)))
21% A period:
((C-Fml ("21 within a lower range (smoothed)")) / (Fml ("time top 21 band (smoothed)")-Fml ("21 within a lower range (smoothed )")))
21 period regression (smoothed):
Mov ((21 * Sum (Cum (1) * C, 21)-Sum (Cum (1), 21) * Sum (C, 21)) / (21 * Sum (Pwr (Cum (1), 2) 21)-Pwr (Sum (Cum (1), 21), 2)) * Cum (1) + (Mov (C, 21, S) - Mov (Cum (1), 21 C) * (21 * Sum (Cum (1) * C, 21) - Sum (Cum (1), 21) * Sum (C, 21)) / (21 * Sum (Pwr (Cum (1), 2), 21)-Pwr (Sum (Cum (1), 21), 2))), 3, C)