说明：  简单移动平均法是指对由移动期数的连续移动所形成的各组数据，使用算术平均法计算各组数据的移动平均值，并将其作为下一期预测值。 简单的移动平均的计算公式如下： Ft=(At-1+At-2+At-3+…+At-n)/n 　　 式中，Ft--对下一期的预测值； 　　 n--移动平均的时期个数； At-1--前期实际值； At-2,At-3和At-n分别表示前两期、前三期直至前n期的实际值。
(Simple moving average method refers to the data of each group formed by the continuous movement of mobile period number, mobile computing each mean value of the data using the arithmetic mean method, and takes it as a predictive value. The following formula for calculating the average mobile simple: Ft= (At-1+At-2+At-3+...+At-n) /n In the formula, Ft-- to forecast next period value N-- moving average period number The actual values of At-1-- At-2, At-3 and At-n said the former two, three until n of the actual value.)