Assume that the CPI base year is 1990 and also assume that the CPI market basket has .04 houses, .1 cars, and 1,500 gallons of gasoline. Please use 1 decimal place in your answers.
Year | House Price | Car Price | Nominal Gasoline Price per Gallon |
1990 |
$150,000 | $10,000 |
$2.00 |
2000 | $210,000 | $18,000 | $2.10 |
2010 | $225,000 | $25,000 | $2.30 |
2019 | $250,000 | $30,000 | $2.50 |
2020 | $252,000 | $30,500 | $2.70 |
What is the value of the CPI in 1990 and in 2020? What is the value of the core CPI in 2020?
CPI = cost of market basket in given year / cost of market basket in base year ) * 100
CPI in 1990 = 100
CPI in 2020 = Cost of market basket in 2020 / cost of market basket in 1990 ) * 100
cost of market basket in 2020 = [(.04*252000) + (.1*30500) + ( 1500 *2.7) ] = 100800 +3050 +4050 = 1,07,900
cost of market basket in 1990 =[ ( 0.4 *150000 ) + ( .1*10000) + ( 1500+2) ] = 60000 + 1000 + 3000 = 64000
CPI in 2020 = { 107900 / 64000) * 100 = 168.59
in core inflation we exclude those commodities price which are high volatile like foods and energy , etc.
thereforewe exclude gasoline price .
Core CPI in 2020 = 103850 / 61000 ) *100 = 170.24
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