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When 1983 Is the CPI Base Year, the CPI Value

question 42

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When 1983 is the CPI base year, the CPI value is 82.4 for 1980 and 172.2 for 2017. Suppose we want to convert this CPI series to have a base year of 2017 (that is, CPI2017 = 100) . What is the value of the revised CPI for 1980?


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