CPI is more commonly use than GDP deflator as a gauge of inflation because the former is much better in reflecting the goods and services bought by consumers than the latter.
But what is CPI and GDP?
- CPI or Consumer Price Index can measure the standard adjustment in prices over time for a basket of consumer goods and services paid by urban consumers.
- GDP deflator or Gross Domestic Product deflator can reflect the prices of domestically produced or offered products and services.
To sum up, CPI calculate the monthly or overall prices' change consumed by the consumers on fixed basket of consumptions over time but to calculate the value of an index to compare prices across different years, you'll use GDP deflator.
Learn more about how CPI differs from GDP deflator: https://brainly.com/question/28124866
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