How To Find Seasonal Index

Overall average = (100 + 120 + ... + 200 + 110 + ...) / 24 = 130

📌 Example: If January’s average sales are 120 and the overall monthly average is 100, the seasonal index = 1.2 (20% above average). how to find seasonal index

To quantify these patterns, we use a . This guide will walk you through exactly how to calculate it using the most reliable method: the Ratio-to-Moving-Average method. What is a Seasonal Index? Overall average = (100 + 120 +