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Problems with the Consumer Price Index (CPI) definitions

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  • Consumer Price Index
    A statistical measure tracking changes in the cost of a fixed basket of goods and services over time to estimate inflation.
  • Inflation
    A general increase in prices across an economy, reducing purchasing power and measured by changes in price indices.
  • Fixed Basket
    A predetermined set of goods and services used to monitor price changes and calculate cost-of-living adjustments.
  • Substitution Bias
    A distortion in inflation measurement caused when consumers switch to cheaper alternatives, making price increases appear smaller.
  • New Goods Bias
    A measurement error arising when expensive new products are added to the price index, potentially exaggerating inflation.
  • Quality Bias
    A misrepresentation in inflation data due to changes in product quality, which can either inflate or deflate price index readings.
  • Store Brand
    A lower-cost alternative to name brand products, often chosen by consumers during periods of rising prices.
  • Name Brand
    A recognized product with higher prices, often replaced by cheaper options during inflationary periods.
  • Personal Computer
    An example of a new product added to the price index basket, initially expensive and affecting inflation calculations.
  • Fast Fashion
    A trend in clothing characterized by lower prices and reduced quality, impacting price index measurements.
  • Bureau of Economic Analysis
    A government agency responsible for adjusting economic data to account for biases in price index calculations.
  • Cell Phone Market
    An industry where frequent product improvements and price changes illustrate quality bias in inflation measurement.
  • Price Index
    A statistical tool used to track changes in prices for a group of goods and services over time.
  • Market Analysis
    The process of interpreting economic data, including price indices, to understand trends and biases in consumer behavior.