Among them:

Yn+ 1—— the weighted average of the n+ 1 period;

Yi-the actual value of the first stage;

Xi- the weight of the first stage (the sum of the weights is equal to1);

N- number of current cycles;

The forecast value calculated by the weighted moving average method is sensitive to the recent trend, but if a group of data has obvious seasonal influence, the forecast value obtained by the weighted moving average method may be biased. So when there are obvious seasonal factors, it is best not to weigh them.

I hope I can help you! !