chap 11 Flashcards
(18 cards)
consumer price index (CPI)
measure the typical consumer’s cost of living
the basis of cost of living adjustments (COLAs) in many contracts and in Social Security
steps to calculate CPI
fix the basket, find the prices, compute the baskets cost, choose a base year and compute the index, compute the inflation rate
who surveys consumers to determine what’s in the typical consumers shopping basket?
Bureau of Labor Statistics (BLS)
CPI =
100 * (cost of basket in current year/cost of basket in base year)
inflation rate =
100 * (CPI this year - CPI last year)/(CPI last year)
what’s in the CPI basket?
anything that people need to survive: housing, transportation, food and beverages, etc
substitution bias (CPI problem)
some price rise faster than others, consumers shift to use relatively cheaper goods, CPI is fixed so it doesn’t catch this.
introduction of new goods (CPI problem)
new goods increase variety so consumers have more to pick from, dollar become more valuable
unmeasured quality change (CPI problem)
improvement in quality of goods (therefore price?) increases value of the dollar, but quality is hard to measure so the BLS doesn’t really effectively count this
problems in the CPI overstate or understae cost of living increases
overstate
imported consumer goods CPI/GDP?
yes CPI
no GDP
capital goods CPI/GDP?
no CPI
yes GDP (if domestically produced)
baskets in CPI and GDP
CPI: fixed basket
GDP: uses basket of currently produced g&s
comparing dollar figures from different times (equation)
amount in today’s dollars = (amount in old dollars) * (CPI today)/(CPI then)
indexation
a dollar amount is indexed for inflation if it is automatically corrected for inflation by law or in a contract
ex: COLAs and Social Security payments
real interest rates
corrected for inflation, the rate of growth in the purchasing power of a deposit or debt
the nominal interest rate
not corrected for inflation, the rate of growth in the dollar value of a deposit or debt
real interest rate = (equation)
(nominal interest rate) - (inflation rate)