(Standard Deviation, StdDev) . . .
, , . , , .
, Bollinger Bands .
, . , , . , , , .
StdDev (i) = SQRT (AMOUNT (j = i - N, i) / N)
AMOUNT (j = i - N, i) = SUM ((ApPRICE (j) - MA (ApPRICE (i), N, i)) ^ 2)
:
StdDev (i) ;
SQRT ;
AMOUNT(j = i - N, i) j = i - N i;
N ;
ApPRICE (j) j- ;
MA (ApPRICE (i), N, i) N ;
ApPRICE (i) .
