91222 inflation Flashcards
inflation
a sustained increase in the general price level
deflation
a fall in general price level
hyper inflation
an incredibly high rate of inflation
general price level
an average of all prices in the economy measured by an index
general or persistant price rise
an increase in the average of all prices in the economy measured by an index such as CPI
indivdual price rise
an increase in the market price of a single product
purchasing power
inflation reduces the purchasing power of money ( you cannot buy as much for the same amount in $ )
purchasing power is the amount of goods your income will pay
nominal value
the value in current year dollars
unjusted rate or current price without taking inflation or other factors into account
real value
the nominal value adjusted for the effect of inflation
disinflation
a slowing rate of increase in the general price level
CPI
consumer price index
the measured change in the price level of a basket of goods and services purchased by households. type of index allowing us to calculate the rate of inflation.
price index numbers
takes prices from a large bundle of goods and calculates an index number and gives us a indication of prices if inflation or deflation is occuring
weighted price index
CPI uses weighting process
each item in the CPI has a different influence over the final score depending on its importance to households. determined by the fraction of total spending on that item.
eg households spend 17% of their income on food so food makes up 17% of their final price index CPI.
using index values to work out inflation rate and formula
inflation is calculated by one period to another not from base year.
formula
= % change = new - old / old x 100
limitations of CPI
fails to include prices of goods that are diffcult to measure eg second hand goods
measures the average household but what is the average household
spending patterns changing constantly
many goods change desgin quality and performance
accepted internatianlly but other countries weighing of goods differ