Critique of a Price Level Calculation
An analyst wants to measure the change in the price level for a typical student between two years.
- In Year 1, the student's 'basket' consists of 10 textbooks and 50 cups of coffee, costing a total of $1,250.
- In Year 2, the analyst observes that textbooks have become much more expensive, so students are now buying only 5 textbooks but are purchasing 100 cups of coffee. The total cost of this new basket is also $1,250.
The analyst concludes that the student's cost of living has not changed. Identify the fundamental flaw in the analyst's method for measuring the change in the general price level and explain why this method is incorrect.
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Introduction to Macroeconomics Course
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Consumer Price Index (CPI)
An economist wants to measure the change in the cost of a 'standard grocery run' between two years.
- In Year 1, the basket consists of 1 loaf of bread ($3), 1 gallon of milk ($4), and 1 dozen eggs ($2). The total cost is $9.
- In Year 2, the economist observes that bread now costs $4 and milk costs $3.50. They also notice that many people are now buying a half-dozen eggs for $1.50 instead of a full dozen. The economist calculates the new basket cost as $4 (bread) + $3.50 (milk) + $1.50 (half-dozen eggs) = $9.
The economist concludes that there has been no overall change in prices. What is the fundamental error in this approach to measuring the change in the general price level?
Applying the Shopping Basket Method
Critique of a Price Level Calculation
To accurately measure the change in the general price level between two periods using the 'shopping basket' method, the quantities of goods and services in the basket should be adjusted in the second period to reflect the most current consumer purchasing habits.
A researcher wants to measure the change in the overall cost of typical household expenses in a town between last year and this year. Arrange the following steps in the correct logical order to accurately apply the 'shopping basket' method for this purpose.
Evaluating a Method for Price Measurement
An economist is using the 'shopping basket' method to measure the change in the general price level between two years. Match each action taken by the economist with the correct description of its purpose or validity within this method.
A simple shopping basket is defined as containing 2 loaves of bread and 1 gallon of milk. In a base year, the total cost of this basket was calculated. In the following year, the price of bread is $3.50 per loaf and the price of milk is $5.00 per gallon. To measure the change in the general price level, the cost of this identical basket in the following year would be $____.
Calculating Price Changes for a Town's Representative Basket
Interpreting Price Changes with a Fixed Basket