Etymology
The word "regression" comes from the Latin word "regressus," which means "a going back."
Meaning and Origin
In mathematics and statistics, regression refers to the process of finding a relationship between a dependent variable and one or more independent variables. The term was first used in this context by Francis Galton in 1886. Galton observed that the heights of children tend to regress towards the average height of the population, meaning that the children of tall parents are typically shorter than their parents, while the children of short parents are typically taller than their parents.
The term "regression" has since been generalized to refer to any process in which a variable tends to move towards a mean or average value. For example, in psychology, regression refers to the process of returning to a previous state or behavior after a period of progress.
Usage
Regression is a commonly used technique in statistics for modeling the relationship between variables. Regression models can be used to predict the value of a dependent variable based on the values of one or more independent variables. Regression models are also used to test hypotheses about the relationship between variables.
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