中文说明：所谓时间序列就是一组按照一定的时间间隔排列的一组数据。这一组数据可以表示各种各样的含义的数值，如对某种产品的需求量、产量，销售额，等。其时间间隔可以是任意的时间单位，如小时、日、周、月等。通常，对于这些量的预测，由于很难确定它与其他因变量的关系，或收集因变量的数据非常困难，这时我们就不能采用回归分析方法进行预测，或者说，有时对预测的精度要求不是特别高，这时我们都可以使用时间序列分析方法来进行预测。
English Description：
So-called time series is a set of a set of data arranged according to a certain time interval. This set of data can represent a wide variety of values, such as the demand for a certain product, production, sales, and so on. Its unit of time interval can be any, such as hours, days, weeks, months, etc. In General, for these forecasts, since it is difficult to determine its relationship to the other dependent variables, or collect data of the dependent variable is difficult, at this time we cannot use regression analysis to predict, or sometimes on the prediction accuracy requirements are not particularly high, at this time we are using time series analysis method for predicting.