Why Do Economists Use Models

question 153

Multiple Choice

Why do economists use models?

• A) Models are used to add complexity to a simple world.
• B) Models allow us to study a simplified version of a complex world.
• C) Models allow us to control exogenous factors.
• D) Models make the world harder to understand.
• E) Models allow us to examine more factors than what actually exists in our world.

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Definitions:

Percentiles

Statistical measures indicating the value below which a given percentage of observations in a group of observations falls.

Interquartile Range

A measure of variability, defined as the difference between the first and third quartiles, describing the middle 50% of a data set.

25th Percentile

A value below which 25% of the data falls.

75th Percentile

A value below which 75% of the data points in a dataset fall, used as a measure of dispersion.