In this post, I’ll attempt to show how to forecast time series data using ARIMA (autoregressive integrated moving average). As usual, I try to practice with «real-world», which can be obtained easily by downloading open data from government websites. I chose the unemployment rate in the European Union’s 27 member countries. The data were obtained from the OECD data portal (http://dataportal.oecd.org/). First of all, I’m going to try to clean up the data, in this
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