EMA (Exponential Moving Average)
Doosre naam: EMA, exponential moving average, EMA 20, EMA 50.
Is page ke kuch hisse abhi English mein hain.
Formula
alpha = 2 / (period + 1). New EMA = prior EMA + alpha x (new close - prior EMA). The desk starts from the first reached close. With period 3 and closes 100 then 104, alpha is 0.5 and the next EMA is 102.
Ise kaise padhein
alpha = 2 / (period + 1). Naya EMA = pichhla EMA + alpha x (naya close - pichhla EMA). Desk pehle mile close se shuru karta hai. Period 3 aur closes 100 phir 104 hon, toh alpha 0.5 hai aur agla EMA 102 hai.
2 lines ko same chart interval par dekhein. Chhota period badlav ko jaldi follow karta hai. Bada period use zyada smooth karta hai aur mudne mein der leta hai. EMA 20 sirf aakhri 20 closes ka saadha average nahi hai. Purane daam ka chhota wazan ab bhi rehta hai. Desk ki pehli reading pehla close hai. Zyada purani history ya alag shuruaat wala chart pehle kuch alag values dikha sakta hai. Banta hua candle badal sakta hai, isliye uska EMA bhi badalta hai.
Yeh kya nahi batata
EMA ab tak mile daam batata hai. Aage kya hoga, yeh nahi batata. Sideways bazaar mein daam line ko kai baar paar kar sakta hai. Sirf line paar karna koi order rule nahi hai. Is line mein price hai, order-book depth, spread aur costs nahi. Index ki line option ka premium bhi nahi dikhati. Desk par missing close ki reading nahi hoti. Agla sahi close pichhle EMA se aage badhta hai. Missing data kabhi 0 daam nahi banta.
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.