레슨
- 01What is a moving average?A moving average is the average closing price over a set number of recent candles, recalculated every time a new candle closes. Plotted as a line, it smooths out small price swings so the direction of the trend is easier to see. Because it is built from past prices, it always lags behind the market.
- 02Simple moving average (SMA).A simple moving average (SMA) adds the closing prices of the last N candles and divides by N. Each new candle adds one price and drops the oldest, so the line rolls forward. Every price carries equal weight, so one unusually large close lifts the average and moves it again when it drops out.
- 03Exponential moving average (EMA).An exponential moving average (EMA) is an average of past prices that gives the latest close the most weight. Each period it moves part of the way toward the new price, by a share set by k = 2 ÷ (N + 1). It turns sooner than a simple moving average, but it still lags and gives false signals in sideways markets.
- 04SMA or EMA: which should you use?An SMA gives every price in its window the same weight, so it is smooth but slow to turn. An EMA gives the newest prices more weight, so it turns sooner but reacts more to noise. Neither is better in general: choose by the job and test it on your own charts.
- 05Using moving averages to read the trend.A moving average gives two trend readings. Price above the line means the latest close is higher than the average, and price below means lower. The line's slope shows whether the average itself is rising or falling. When both point the same way, the trend reading is clear; when they disagree, it is mixed.
- 06Moving average crossovers.A moving average crossover is the moment a fast moving average crosses a slow one. A cross above is read as a buy signal and a cross below as a sell signal. Because both lines are built from past prices, the signal always comes after the turn, and sideways markets produce repeated false crosses.
- 07Moving averages as dynamic support and resistance.Dynamic support is a moving average that sits below price in an uptrend and keeps rising with it, so pullbacks sometimes pause near the line. Dynamic resistance is the same idea above price in a downtrend. Treat the line as a rough zone. It is most useful in clear trends and often fails in ranges.
- 08Moving averages cheat sheet.A moving average is the average of recent closing prices, recalculated on every new bar. The SMA weights the last N closes equally, and the EMA weights recent closes more, so it reacts faster. Traders use the slope for trend, fast and slow crossovers as signals and the line as moving support or resistance, and every version lags price.