Seasonal Index __hot__ Jun 2026

If the company forecasts total annual sales of $1,000,000 next year, the average quarterly sales would be $250,000. However, using the index, the forecast for Q2 would be: $$ $250,000 \times \frac140100 = $350,000 $$ Without the index, the company would have underestimated Q2 demand by $100,000.

Group all ratios by month (or quarter, etc.) and calculate the or mean (median is less sensitive to outliers). seasonal index