ELI5: Explain Like I'm 5

Single-equation methods (econometrics)

Single-equation methods are tools that economists use to help them understand how one economic variable affects another.

Imagine that you have a toy car and you want to know how fast it goes when you push it. To figure this out, you could use a single-equation method called regression analysis.

Regression analysis uses a formula to predict how one variable (the speed of the car) changes when another variable (the force of your push) changes. In this case, the formula might look like:

Speed = 2 x Force + 5

This formula tells us that if we push the car with a force of 1, it should go 7 miles per hour (2 x 1 + 5 = 7). If we push it with a force of 2, it should go 9 mph (2 x 2 + 5 = 9), and so on.

Economists use similar methods to study things like how changes in interest rates affect borrowing and spending, or how changes in the minimum wage affect employment levels. They can also use single-equation methods to adjust for other factors that might affect the relationship between variables, like age, income, or education level.

Overall, single-equation methods are helpful because they allow economists to quantitatively study relationships between variables, and make predictions about what might happen in different situations.