Module M02 Quiz: Measuring the Price Level and Inflation
25 questions ยท Introductory ยท Mix of multiple choice, calculation, and short answer
How to use
Attempt each question before clicking Show Answer. For calculation questions, write out your working before checking.
Question 1
Lesson L01 ยท Gdp
What is the primary purpose of the Consumer Price Index (CPI)?
Type: Multiple Choice
- A) To measure changes in the price of a fixed basket of goods and services
- B) To track stock market performance
- C) To calculate GDP growth
- D) To measure unemployment rates
Show Answer
Answer: A) To measure changes in the price of a fixed basket of goods and services
The CPI measures the change in the price of a fixed basket of goods and services that a typical household buys, not stock markets, GDP, or unemployment.
Question 2
Lesson L01 ยท Inflation
Which of the following is a limitation of the CPI?
Type: Multiple Choice
- A) It includes new products immediately
- B) It accounts for consumer substitution
- C) It uses a fixed basket of goods
- D) It measures all goods in the economy
Show Answer
Answer: C) It uses a fixed basket of goods
The CPI uses a fixed basket of goods, which ignores consumer substitution to cheaper alternatives when prices rise, leading to substitution bias.
Question 3
Lesson L01 ยท Intro
If the CPI basket cost $1,000 in the base year and $1,157 in the current year, what is the CPI?
Type: Calculation
Show Answer
Answer: CPI = (Current year cost / Base year cost) * 100 = (1,157 / 1,000) * 100 = 115.7
inflation
Question 4
Lesson L01 ยท Intro
Explain one key use of the CPI in Australia.
Type: Short Answer
Show Answer
Answer: The CPI is used to index wages, pensions, and welfare payments, ensuring they keep pace with inflation.
inflation
Question 5
Lesson L01 ยท Inflation
Why does the CPI tend to overstate true inflation?
Type: Multiple Choice
- A) It includes too many goods
- B) It uses a fixed basket and ignores substitution
- C) It updates weights too frequently
- D) It excludes housing costs
Show Answer
Answer: B) It uses a fixed basket and ignores substitution
The CPI uses a fixed basket, so it does not account for consumers switching to cheaper alternatives when prices rise, leading to an overstatement of inflation.
Question 6
Lesson L02 ยท Inflation
What is the formula for calculating the inflation rate using the CPI?
Type: Multiple Choice
- A) (CPI_current - CPI_previous) / CPI_previous * 100
- B) (CPI_previous - CPI_current) / CPI_current * 100
- C) CPI_current / CPI_previous * 100
- D) CPI_previous / CPI_current * 100
Show Answer
Answer: A) (CPI_current - CPI_previous) / CPI_previous * 100
The inflation rate is calculated as the percentage change in the CPI from the previous period to the current period.
Question 7
Lesson L02 ยท Inflation
Which measure of inflation includes all goods and services in GDP, not just consumer goods?
Type: Multiple Choice
- A) CPI
- B) GDP deflator
- C) Trimmed mean CPI
- D) Producer Price Index
Show Answer
Answer: B) GDP deflator
The GDP deflator covers all goods and services included in GDP, including investment and government goods, unlike the CPI, which focuses only on consumer goods.
Question 8
Lesson L02 ยท Intro
If the CPI was 105.0 in Q1 2023 and 107.1 in Q1 2024, what is the annual inflation rate?
Type: Calculation
Show Answer
Answer: Inflation rate = (107.1 - 105.0) / 105.0 * 100 = 2.0%
inflation
Question 9
Lesson L02 ยท Intro
Why might the GDP deflator and CPI diverge during a commodity export boom?
Type: Short Answer
Show Answer
Answer: The GDP deflator includes export prices (like iron ore), which surge during a boom, while the CPI excludes exports, focusing only on consumer goods.
inflation
Question 10
Lesson L02 ยท Inflation
What is the RBA's preferred measure of underlying inflation?
Type: Multiple Choice
- A) Headline CPI
- B) GDP deflator
- C) Trimmed mean CPI
- D) Producer Price Index
Show Answer
Answer: C) Trimmed mean CPI
The RBA uses the trimmed mean CPI, which removes the most volatile price movements, to gauge underlying inflation trends.
Question 11
Lesson L03 ยท Inflation
What is the term for the cost of frequently updating prices due to inflation?
Type: Multiple Choice
- A) Shoe-leather costs
- B) Menu costs
- C) Redistribution costs
- D) Uncertainty costs
Show Answer
Answer: B) Menu costs
Menu costs refer to the real resources spent by firms to update price lists, reprogram systems, and renegotiate contracts due to inflation.
Question 12
Lesson L03 ยท Inflation
Which group benefits from unexpected inflation?
Type: Multiple Choice
- A) Savers with fixed-interest deposits
- B) Borrowers with fixed-rate loans
- C) Retirees on fixed pensions
- D) Workers with wage indexation
Show Answer
Answer: B) Borrowers with fixed-rate loans
Borrowers benefit because they repay loans with dollars that are worth less in real terms, while lenders (savers) lose purchasing power.
Question 13
Lesson L03 ยท Intro
If a pensioner earns 1% interest on savings and inflation is 5%, what is their real return?
Type: Calculation
Show Answer
Answer: Real return = Nominal interest - Inflation = 1% - 5% = -4%.
inflation
Question 14
Lesson L03 ยท Intro
Name one social cost of high unemployment.
Type: Short Answer
Show Answer
Answer: High unemployment can lead to increased mental health issues, such as depression and anxiety.
unemployment
Question 15
Lesson L03 ยท Inflation
What is hyperinflation typically caused by?
Type: Multiple Choice
- A) Technological advancements
- B) Government printing money to finance deficits
- C) Increased consumer savings
- D) Global trade surpluses
Show Answer
Answer: B) Government printing money to finance deficits
Hyperinflation is almost always caused by governments rapidly printing money to finance spending, leading to a loss of confidence in the currency.
Question 16
Lesson L04 ยท Savings
What is the difference between saving (a flow) and wealth (a stock)?
Type: Multiple Choice
- A) Saving is income not spent; wealth is assets minus liabilities
- B) Saving is assets minus liabilities; wealth is income not spent
- C) Both are flows
- D) Both are stocks
Show Answer
Answer: A) Saving is income not spent; wealth is assets minus liabilities
Saving is the portion of income not spent during a period (a flow), while wealth is the total value of assets minus liabilities at a point in time (a stock).
Question 17
Lesson L04 ยท Savings
Which component makes up the largest share of Australian household assets?
Type: Multiple Choice
- A) Superannuation
- B) Dwellings (property)
- C) Shares and deposits
- D) Cash
Show Answer
Answer: B) Dwellings (property)
Dwellings (property) make up the largest share (~$9.5 trillion in 2023) of Australian household assets.
Question 18
Lesson L04 ยท Intro
If a household has assets of $800,000 and liabilities of $300,000, what is its net wealth?
Type: Calculation
Show Answer
Answer: Net wealth = Assets - Liabilities = $800,000 - $300,000 = $500,000.
savings
Question 19
Lesson L04 ยท Intro
Define national saving.
Type: Short Answer
Show Answer
Answer: National saving is the sum of private saving (household + business) and public saving (government revenue minus expenditure).
savings
Question 20
Lesson L04 ยท Savings
What happens to the current account if national saving falls while desired investment stays constant?
Type: Multiple Choice
- A) It moves toward surplus
- B) It moves toward deficit
- C) It remains unchanged
- D) It fluctuates randomly
Show Answer
Answer: B) It moves toward deficit
A shortfall in national saving relative to investment must be financed by borrowing from abroad, widening the current account deficit.
Question 21
Lesson L05 ยท Interest Rates
What does the Fisher equation (r โ i โ ฯ) describe?
Type: Multiple Choice
- A) The relationship between nominal and real interest rates
- B) The relationship between GDP and inflation
- C) The relationship between saving and investment
- D) The relationship between unemployment and inflation
Show Answer
Answer: A) The relationship between nominal and real interest rates
The Fisher equation shows that the real interest rate (r) is approximately the nominal rate (i) minus inflation (ฯ).
Question 22
Lesson L05 ยท Intro
If the nominal interest rate is 4.35% and inflation is 3.8%, what is the real interest rate?
Type: Calculation
Show Answer
Answer: Real interest rate โ Nominal rate - Inflation = 4.35% - 3.8% = 0.55%.
interest-rates
Question 23
Lesson L05 ยท Interest Rates
Who benefits from unexpected inflation: borrowers or lenders?
Type: Multiple Choice
- A) Borrowers
- B) Lenders
- C) Neither
- D) Both
Show Answer
Answer: A) Borrowers
Borrowers benefit because they repay loans with dollars that are worth less in real terms, while lenders lose purchasing power.
Question 24
Lesson L05 ยท Intro
Why is moderate inflation (2-3%) considered beneficial?
Type: Short Answer
Show Answer
Answer: Moderate inflation gives central banks room to cut real interest rates in a downturn and facilitates real wage adjustments.
inflation
Question 25
Lesson L05 ยท Intro
What is the ex-post real interest rate if the nominal rate was 1.2% and actual inflation was 6%?
Type: Calculation
Show Answer
Answer: Ex-post real rate = Nominal rate - Actual inflation = 1.2% - 6% = -4.8%.
interest-rates