We will learn about some signal-processing techniques in this chapter, and we will analyze time-series data with these. As example data, we will use the sunspot data provided by a Belgian scientific institute. We can download this data from several places on the Internet, and it is also provided as sample data by the statsmodels library. There are a number of things we can do with the data, such as:
Trying to determine periodic cycles within the data. This can be done, but this is a bit advanced, so we will just get you started.
Smoothing the data to filter out noise.
Forecasting.