The "tüketici fiyat endeksi" (CPI) is a measure that examines the average change over time in the prices paid by consumers for a basket of goods and services. This index is used to assess inflation and the cost of living, helping to understand how purchasing power changes. Governments and economists often rely on the CPI to make informed decisions regarding monetary policy and economic planning. It includes various categories such as food, housing, transportation, and healthcare, reflecting the spending habits of households in a specific region or country.