Answer:
allows for a changing basket of goods.
Step-by-step explanation:
Personal consumption expenditure (PCE) basically measures consumer spending on a national level, and consumer spending is by far the largest component of the gross domestic product (around 70% actually). PCE are used to elaborate the PCE price index which is an alternative to the most generally used CPI price index.
The PCE price index is currently the main inflation index used by the Fed, but the CPI elaborated by the Bureau of Labor Statistics is still the most used and well known price index.
The PCE price index divides consumption into durable goods, non-durable goods and services. The main advantage of the PCE over the CPI is that the PCE is adjusted more frequently and therefore, should show a more realistic basket of goods and services than the CPI.