基于时间序列对用水量的预测，建立arma模型确定阶数和参数，然后通过前几年的数据和周期性的趋势对未来的数据进行预测和检验.包含实例源数据及所有代码。-Based on time sequence for the forecast of water consumption, the establishment of arma model order and parameters, and then through the data of a few years ago and periodic t