12. Time Series Analysis

1. Seasonality

Detecting patterns that repeat (Weekly, Yearly).

python
from statsmodels.tsa.seasonal import seasonal_decompose
result = seasonal_decompose(df['sales'], period=365)
result.plot()

Forecasting made easy.

python
m = Prophet()
m.fit(df)
future = m.make_future_dataframe(periods=365)
forecast = m.predict(future)