CTCP IN SÁCH GIÁO KHOA TẠI TP. HỒ CHÍ MINH

You have the option to chart up to 3 Simple Moving Averages (SMAs) at the same time. The 3 input boxes above represent the periods of the Simple Moving Averages you wish to chart.If you are charting on minute, daily or weekly periods, the SMA periods you indicate above will be for minutes, days and weeks, respectively. An SMA is calculated by adding the security's prices for the most recent N time periods and then dividing by N.It smooths out a data series, making it easier to spot trends.

You have the option to chart up to 3 Exponential Moving Averages (EMAs) at the same time. The 3 input boxes above represent the periods of the Exponential Moving Averages you wish to chart. If you are charting on minute, daily or weekly periods, the EMA periods you indicate above will be for minutes, days and weeks, respectively. An EMA differs slightly from a Simple Moving Average (SMA) in that it gives extra weight to more recent price data. This allows investors to track and respond quickly to recent price trends that might take more time to appear in an SMA. The formula for an EMA is: EMA = price today * K + EMA yest * (1-K) where K = 2 / (N+1). Like an SMA, it smooths out a data series, making it easier to spot trends.

Bollinger Bands are curves drawn in and around the price structure that define high and low on a relative basis. The base of the bands is a simple moving average. A measure of volatility, standard deviation, is used to set the width of the bands making them fully adaptive to changing market conditions. The defaults are bands spread above and below a 20-day simple moving average by two standard deviations.

You have the option to change the period of the Relative Strength Index (RSI) above.The default period is set to 14. The Relative Strength Index (RSI) measures the price of a security against its past performance in order to determine its internal strength (in an attempt to quantify the security's price momentum).popular method of analyzing the RSI is to look for a divergence in which the security is making a new high, but the RSI is failing to surpass its previous high. This divergence is an indication of an impending reversal. When the RSI then turns down and falls below its most recent trough, it is said to have completed a 'failure swing.' The failure swing is considered a confirmation of the impending reversal.- "Technical Analysis from A to Z" by Stephen Aechlis.