Index Numbers Flashcards
What are Index umbers used for?
Economists frequently use index numbers when making comparisons over time
What is a base year?
The figure an index starts on
Usually 100= Base period
What does an index of 103 mean?
3% rise from base year
What do index numbers help with?
Understand the significance of a change
How do you calculate percentage change?
Change/Original x 100
Why do we use weightings?
To show the relative importance of individual data in our findings
What are the issues with CPI?
As it is based on an imaginary typical family the CPI never really reflects anyone’s exact spending patterns
What is the problem with the basket of goods, used to measure Inflation?
The inflation basket has to include many goods and services that not everyone buys, most people don’t smoke but cigarettes are included