Trend

Estimating a trend in a time series and using that trend to predict future values of the time series is the simplest method of forecasting. We can examine two types of trends, linear trends, and log-linear trends, and discuss how to choose between them.

Linear Trend Models

The simplest type of trend is a linear trend, one in which the dependent variable changes at a constant rate with time. If a time series has a linear…

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