They're literally measuring prices at grocery stores, as well as a basket of other goods and services. https://www.bls.gov/cpi/questions-and-answers.htm https:

They're literally measuring prices at grocery stores, as well as a basket of other goods and services. https://www.bls.gov/cpi/questions-and-answers.htm https://www.bls.gov/cpi/questions-and-answers.htm