what type of variable is a coefficient what variable can be used to make regression models why do we need numerical and categorical variables when we predict what type of variable is r which type of variable is used in regression what is r used for in regression is it possible to make regressions with both categorical and numerical variable what type parameter in r when is r to make regression predictions? r is good for estimating regression why do r use a r command for categorical and numerical variables what is the r r used in prediction? how are categorical variables used in regression what type of variables can you combine in r to make a regression what is r's ability to make regression estimates what variables are used in regression r can r use categorical and numerical variables what is categorical variables in r does r handle numeric or categorical variables how to use categorical variable in r