An economic model is built to understand the housing market in a specific city. The model takes into account the city's current population, the average income of its citizens, and local construction costs. By analyzing how these factors influence the number of people wanting to buy homes and the number of homes available, the model calculates the average home price for that city. Which of the following is a variable whose value is determined by the internal workings of this model?

Analyzing a Simple Agricultural Market Model

Identifying an Internally Determined Variable

An economic model is created to forecast the number of new cars that will be sold in a country next year. The model's calculations are based on several key pieces of external data: the current national interest rates, the average price of gasoline, and the present unemployment rate. The model processes these pieces of data to produce its final forecast. Based on this description, the 'number of new cars sold' is a variable whose value is treated as a given input for the model.

An economic model is designed to determine the market price and total quantity of corn sold in a particular year. The model takes the amount of annual rainfall and the average cost of fertilizer as given starting points for its calculations. Match each variable from this model to the description that best fits its role.

Analyzing a Model's Internal Logic

In an economic model created to determine the equilibrium price of wheat, factors such as annual rainfall and the cost of fertilizer are treated as given inputs. The model then calculates the resulting market price based on these factors. Within this framework, the calculated price of wheat is a(n) ________ variable, as its value is solved for by the model itself.

An economist creates a simple model to determine the equilibrium price and quantity of coffee sold in a month. The model is given pre-determined values for average consumer income and the cost of coffee beans. Arrange the following items to show the logical sequence a model would follow to calculate its internally-determined variables.

A technology company develops a detailed mathematical model to decide the launch price for its new smartphone. The model uses the cost of the phone's components, the prices of competing phones, and the planned advertising budget as its primary inputs. After processing these inputs, the model calculates the specific price that is predicted to generate the most profit and also forecasts the total number of phones that will be sold at that price.

Which statement best analyzes the role of the 'launch price' within this company's model?

Critique of a Market Prediction Model

Equilibrium and Variables in Irving Fisher's Physical Model