Statistics in Action Case: Financial Time Series

Time series, data that flow over time, are common in business. Among these, time series that track the flow of dollars are the most studied. The financial time series considered in this case tracks the value of stock in a company, Enron.

This case reviews many of the essential concepts covered in the chapters of this section: the importance of understanding the data, numerical summaries and distributions, plots to find patterns, and the use of models to describe those patterns. It is important to appreciate several quirks of stock prices ...

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