ボリンジャーバンド(Bollinger Bands)の計算式
Middle Band =n-period moving average (MA)
Upper Band = n-period MA+(n-period standard deviation of price x k)
Lower Band = n-period MA- (n-period standard deviation of price x k)
k=2.0
Bollinger Band%Bの計算式
%b = (Close − LowerBB) / (UpperBB − LowerBB)
BollingerBandWidthの計算式
BandWidth = (UpperBB − LowerBB) / MiddleBB
