Sum = 0.70+1.10+0.95+1.25 = 4.00 exactly. Perfect.
The seasonal index is – the pattern repeats each cycle (usually 12 months, 4 quarters, etc.). seasonal index
This is where the comes into play. It is a fundamental tool used in time-series analysis to quantify recurring patterns, allowing organizations to distinguish between a genuine trend and a simple seasonal hiccup. Sum = 0
The seasonal index transforms raw time series into actionable intelligence. It answers: “Is this month’s high value due to a real trend or just because it’s always high this time of year?” By quantifying seasonal expectations, you can make smarter forecasts, allocate resources efficiently, and avoid being misled by calendar‑driven fluctuations. you can make smarter forecasts