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Macroeconomics: Inflation

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  • What is inflation?

    Inflation is the sustained increase in the general price level of goods and services in an economy over a period of time.

  • How is inflation measured?

    Inflation is commonly measured using price indices like the Consumer Price Index (CPI) or the Producer Price Index (PPI).

  • What causes demand-pull inflation?

    Demand-pull inflation occurs when aggregate demand exceeds aggregate supply, pushing prices up.

  • What is cost-push inflation?

    Cost-push inflation happens when rising production costs increase prices, even if demand remains constant.

  • What is the difference between nominal and real values?

    Nominal values are measured in current prices, while real values are adjusted for inflation to reflect true purchasing power.

  • How does inflation affect purchasing power?

    Inflation reduces the purchasing power of money, meaning each unit of currency buys fewer goods and services over time.

  • What is hyperinflation?

    Hyperinflation is an extremely high and typically accelerating inflation rate, often exceeding 50% per month.

  • What is the inflation rate formula?

    The inflation rate is calculated as \(\frac{P_t - P_{t-1}}{P_{t-1}} \times 100\%\), where P is the price level.

  • What are the effects of unexpected inflation?

    Unexpected inflation can redistribute wealth, hurting lenders and fixed-income earners while benefiting borrowers.

  • What is the Phillips Curve?

    The Phillips Curve shows an inverse relationship between inflation and unemployment in the short run.

  • How can central banks control inflation?

    Central banks control inflation by adjusting interest rates and using monetary policy tools to influence money supply.

  • What is the difference between headline and core inflation?

    Headline inflation includes all items, while core inflation excludes volatile food and energy prices.

  • What is deflation?

    Deflation is a decrease in the general price level, the opposite of inflation.

  • What is stagflation?

    Stagflation is a situation with high inflation, high unemployment, and stagnant economic growth.

  • How does inflation impact interest rates?

    Inflation typically leads to higher nominal interest rates to maintain real returns for lenders.

  • What is the Fisher equation?

    The Fisher equation relates nominal interest rate, real interest rate, and inflation: \(i = r + \pi\).

  • What role do expectations play in inflation?

    Inflation expectations influence wage demands and price setting, potentially making inflation self-fulfilling.

  • What is the difference between anticipated and unanticipated inflation?

    Anticipated inflation is expected and can be planned for, while unanticipated inflation causes unexpected economic distortions.

  • How does inflation affect savings?

    Inflation erodes the real value of savings unless interest rates exceed the inflation rate.

  • What is the quantity theory of money?

    The quantity theory states that MV = PY, linking money supply (M), velocity (V), price level (P), and output (Y).