A Time Series Is Not a Time Series

Piano solo is noise because at any point the notes played are not influenced by the past, nor can you listen to them and gain any insight about the pitches that'll be played in the future. If you fit a model to a time series and the difference between your prediction and the actual data is white noise, then there's nothing left to extract from your data. Will cover techniques like arema, which can identify trends and seasonality in our data.