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Data Analysis with R - Second Edition by Tony Fischetti

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Predicting Changes with Time

The inventory and staffing of your favorite bookstore, the telecommunications route of every important phone call you make or website you visit, policy changes with regard to climate change, your retirement portfolio, exploitative pricing models that capitalize on consumer need and scarcity under the guise of efficient allocation of resources; all of these, and innumerable others, have one thing in common. They make heavy use of the statistical approach to predicting changes with time, or time series forecasting, based on data from past and present.

In this chapter, we are going to go through different methods of forecasting but only one overarching model (exponential smoothing/ETS), though there exist many others ...

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