Question

What is the importance of an index number?

Answer 1

An index number is a statistical device designed to measure relative changes in a variable (or a group of variables) over time or across geographical locations. It expresses the value of a variable in a ‘current period’ as a percentage of its value in a standard ‘base period’.

Importance of index number:

• Economic Barometers: They serve as the pulse of an economy, helping experts monitor inflation, trade, and financial health.
• Policy Formulation: Governments rely heavily on indices to formulate appropriate economic plans, tax policies, and agricultural policies.
• Trend Analysis: It helps businesses analyse market trends to make informed decisions about product pricing and raw material procurement.
• Determining Real Wages: Cost-of-living indices determine whether the real purchasing power of salaries is rising, falling, or constant.
• Deflating Values: They are used to adjust nominal economic variables for inflation, reflecting true real economic growth.