BollingerBands was founded by Mr. John Brin. The bollinger band is also called the bollinger band, which uses the statistical principle to find out the standard deviation of the stock price and its confidence interval, thus determining the fluctuation range and future trend of the stock price, and using the band to represent the safe high and low price of the stock price. The upper and lower limits are not fixed, but change with the stock price rolling. Like Mike's indicator, the Brin indicator belongs to the path indicator, and the stock price fluctuates in the upper and lower range. The width of this band varies with the fluctuation of stock price. When the stock price rises and falls, the banded region becomes wider, the fluctuation range becomes narrower and the banded region becomes narrower when it is consolidated.

What is the skill of setting boll exponent parameters?

The premise of setting is to make as many K-lines as possible fall within the boll index. Only by setting such standards and parameters can the boll index be the most accurate. Generally speaking, the stock price will run in the channel formed by the pressure line and the support line, so the optimal parameters of the boll index are related to its most stable moving average and the fluctuation of individual stocks. With the stable K-line as the central axis and the fluctuation of individual stocks as the standard deviation we try to set, we can get a boll index that is most suitable for the stock.

In general, different stocks are different. Some stocks will continue to fluctuate along the 60-day line, while others will fluctuate up and down along the 30-day line. At this time, we need to choose a relatively stable moving average as the middle track, and then set its standard deviation to 2, 3 or 4 according to the fluctuation of individual stocks, so that the bollinger Band parameters we set are more suitable and can completely contain its K line.

So the key to setting the boll index is to find the key points, and then you can get the most suitable boll index.