Malthusianism

Endogenous Variable in an Economic Model

Exogenous Variable in an Economic Model

Use of Mathematics in Economic Models

Augustin Cournot's 1838 publication, 'Recherches sur les Principes Mathématiques de la Théorie des Richesses', was immediately celebrated by his contemporaries and fundamentally changed the study of economics upon its release.

An economist develops a model to understand how a nationwide increase in the price of gasoline affects the sales of electric vehicles. A critic dismisses the model as 'unrealistic' because it does not account for regional differences in public transportation availability. Which of the following statements provides the strongest justification for the economist's decision to exclude this detail?

Designing a Simplified Economic Model

A company manufactures a unique type of artisanal chocolate. Market analysis has determined the relationship between the price of a chocolate bar and the quantity consumers are willing to purchase. The data shows that at a price of $10 per bar, consumers will buy 5,000 bars per week. If the price is lowered to $8 per bar, consumers will buy 8,000 bars per week. The management team sets a new strategic goal: to sell 8,000 bars per week at a price of $10 per bar. Based on the principles of market demand, what is the most accurate assessment of this goal?

Evaluating the Usefulness of Simplified Representations

Evaluating Competing Economic Models

An urban planner is creating a model to predict the impact of a new subway line on rush-hour traffic congestion on major highways. The goal is to create a clear and useful tool for this specific purpose. Which of the following factors, if included, would most likely make the model less useful?

Economic Interpretations of Water Pollution

Designing an Economic Model

An economist is building a model to answer a specific question. Match each research question with the most appropriate simplifying assumption that would make the model useful for its intended purpose.

An economist is developing a model to analyze how a change in the national minimum wage affects employment levels among low-skilled workers. The model intentionally assumes that all low-skilled workers have identical productivity and that all firms are identical in their production processes. What is the most compelling reason for making these simplifications?