explain
It is a series of averages calculated by expanding the time interval of the original time series and moving period by period according to a certain interval length. The new time series formed by these averages has a certain smoothing effect on the fluctuations of the original time series, weakening the influence of short-term contingency factors in the original series, thus presenting a trend of development.
If the moving interval length is K, the moving average series can be written as: where: is the trend value of the moving average; K is a positive integer greater than 1 and less than n. Moving average can be used to smooth the time series, analyze the change trend, and predict the time series. [1]
