Inflation Flashcards
what is inflation
- a sustained increase in the average price level
- Fall in purchasing power of money/currency
what is disinflation
when prices are rising, but at a slower rate than before
what is deflation
a sustained fall in the average price level
how to work out index number
raw number / base year raw number x 100
how to work out annual inflation rate
work out percentage change of index numbers
percentage change equation
change divided by original x 100
what is the RPI
- alternative measure of inflation
- same as the CPI, but housing costs are included
- also calculated using an arithmetic mean, whilst CPU uses geometric mean, so the RPI will give higher measures
problems with using CPI
- CPI focuses on consumer goods and services and does not include asset prices such as housing, stocks, and bonds, which can lead to an incomplete picture of overall inflation and economic health.
- CPI assumes consumers do not change their spending patterns in response to price changes, leading to a potential overestimation of inflation due to substitution effects
- CPI may not accurately represent the spending habits of all demographic groups, especially if certain goods or services are underrepresented in the basket, sample size too low, only 650
what is core CPI
the CPI minus price inelastic goods like food, energy
when would we use PPI(producer price index)
if we think that changes in energy prices would affect CPI in the future
when does demand pull inflation occur
when demand shifts to the right, increase in economic growth but increase in demand pull inflationary pressure
why does demand pull inflationary pressure occur
- when AD shifts to the right, there is greater pressure on existing factors of production to produce more output, resources/supply of them are becoming scarcer, so prices of these scarce resources are going up
things that’ll shift AD right
- decrease IR
- decrease income or corporation tax
- increased consumer business confidence
- increased govt spending
- weak exchange rate
when does cost push inflation occur
when SRAS shifts to the left
why does cost push inflation occur
- leftward shifts of SRAS mean that cost of production for firms will increase, so they’ll be passing those higher costs onto consumers in the form of higher prices