This process tells about the factors affecting the time series data and finds important factors about it. Detrending can be done using many statistical techniques such as quadratic detrending, linear trending, Baxter-King filter etc.ĭetrending time series provides us with normal cyclic time series data as it removes non-cyclic trends. It allows us to know about the normal cyclic trend and the trend beyond the cycle. Removal of trends from a time series data set is called detrend. Local trend: Trend which is present in only a part or many parts of the dataset.
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