Translations:Time series/7/en

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The term time series is a generic one. Often, the term is used to represent a signal continuing over all time, from the remote past to the distant future. Thus, we can say that such a time series has infinite time duration or infinite length. However, in any actual situation, we can obtain the values of a time series only over a finite interval of time. Because a finite number of data values represents a sample of an infinite-length time series, we shall call a finite portion of a time series a sample time series.