Bollinger Bands
Doosre naam: Bollinger, Bollinger bands, price bands.
Is page ke kuch hisse abhi English mein hain.
Formula
Middle = sum of 20 closes / 20. Variance = sum of each squared distance from the middle / 20. Standard deviation = square root of variance. Upper = middle + 2 x standard deviation. Lower = middle - 2 x standard deviation. This uses population variance, with 20 as the divisor.
Ise kaise padhein
Beech = 20 closes ka jod / 20. Variance = har close ki beech se doori ka square, sabka jod / 20. Standard deviation = variance ka square root. Upar = beech + 2 x standard deviation. Neeche = beech - 2 x standard deviation. Yeh population variance hai, isliye divisor 20 hai.
Pehle 19 closes se poori khidki nahi banti, isliye desk unki readings khaali rakhta hai. Missing close ke baad phir se 20 closes chahiye. Saare closes barabar hon toh phailaav 0 hota hai aur 3 lines milti hain. Chhote example mein closes 1, 2 aur 3 ka average 2 aur population variance 2/3 hai. Period 3 aur width 2 par band lagbhag 0.367 se 3.633 hai. Desk ki setting 20 closes leti hai. Banta hua close abhi ke bands badal sakta hai.
Yeh kya nahi batata
Band chhoone se yeh saabit nahi hota ki daam ab mudega. Daam band ke saath ya uske bahar chalta reh sakta hai. Patla phailaav yeh nahi batata ki bada move kab aur kis taraf aayega. Yeh pichhle closes ka hisaab hai, forecast ya probability range nahi. Candle interval badalne se input daam aur bands badalte hain. Tulna mein settings ek jaisi rakhein. Inmein option ka time decay, spread, charges aur fill quality shamil nahi hain.
Jude hue concepts
Practice desk par candles dekhein
NIFTY aur BANKNIFTY ke practice desk par chart dekhein. Yahan samjhe hue idea se uski tulna karein.