ELI5: Explain Like I'm 5

Statistical unit

Statistical units are people or things that help us understand data. They can be anything from a person, a house, a business, or even a country. For example, if you wanted to understand how much money people in the US earn, you would use US citizens as the statistical unit. This means you would look at how much money each person in the US earns. This would help you understand the overall picture of what people in the US earn.