Introduction to Index Numbers

This lecture covers the concept of index numbers, explaining their purpose and how they are used to simplify data analysis by converting data series into a common format. The process of selecting a base year and calculating index numbers is demonstrated using GDP data. The lecture also highlights the benefits of using index numbers for data comparison and analysis, and clarifies common misconceptions about percentage changes in index numbers.

What are some examples of index numbers used in measuring economic variables?

Why is it important to choose a base year when working with index numbers?

How do you calculate the percentage change from one index number to another?