Mimin will discuss this, because there are followers who want to explore this, so Mimin will explain according to what I know.
The choice of period for using MA (Moving Average) or EMA (Exponential Moving Average) depends on individual trading preferences and strategies. Commonly used periods are 50, 100, and 200 days. Using MAs with shorter periods, such as 20 or 50 days, tends to provide faster signals in identifying trend changes. This can be useful for short-term traders who want to take advantage of faster price movements.
On the other hand, using MA with a longer period, such as 100 or 200 days, is more suitable for medium to long term traders.
MAs with longer periods tend to smooth out daily price fluctuations and provide a clearer picture of long-term trends.
Apart from MA, EMA is also a popular indicator in technical analysis. EMA gives greater weight to the latest price data, thereby providing faster signals in identifying trend changes. The use of the same period as MA also applies to EMA.
However, it is important to note that there is no period MA or EMA that is absolutely "should" be used. Each trader must carry out trials and adjustments according to their trading style and preferences.
Always remember to use technical indicators in conjunction with other analysis to make better trading decisions.