Terminology

As regression has been studied in many ways and in multiple fields, there is now a huge amount of terminology and different ways of saying the same thing. The table below describes the terminology used in the RegressionInC documentation and code.

Variable names

written name	description	variable name	otherwise known as
regression	statistical processes for estimating relationship between dependent variable and one or more independent variables	N/A	regression analysis
regressor	an independent variable	N/A	independent variable, predictor variable, covariate, manipulated variable, explanatory variable, exposure variable, risk factor, feature, input variable, exogenous variable
regressors	a collection or independent or regressor variables	X	a collection of regressors
regressand	the dependent variable	y	response variable, regressand, criterion, predicted variable, measured variable, explained variable, experimental variable, responding variable, outcome variable, output variable, target, label, endogenous variable
parameters	the unknown parameters to be estimated	params	coefficients
estimator	the model used to estimate the parameters	various or est	N/A
sample	a subset of all the data	sample	N/A