Study on the Determination of the Moving Step Length in Moving Method of Mean

The forecasting precision with the method of moving average can be improved by the optimal moving step length n. The authors put forward a way to accurately get the optimal moving step length n with the aid of computer. The forecasting precision should be predefined based on the actual problem firstly, and the optimal step length n can be found by adjusting the value of n to make the error rate between actual value and forecasting value minimal. The same way can be used to find the value of n in the method of multi-time moving average. If the forecasting value of n passes the test, this model can be employed in short-time forecasting of actual problem.