chapter 9 :AI insights

5 Seasonality Detection

Identifies repeating patterns that occur at regular time intervals (daily, weekly, monthly, etc.).

Example:
An ice-cream shop sells more in summer months every year.

Analysis Process:

  1. Collect time-series data.

  2. Decompose into:

    • Trend

    • Seasonality

    • Residual

  3. Identify repeating cycles.

  4. Highlight seasonal patterns.