when is regression applied in dataset what is the input vector for regression are categorical input vectors variable length can regression be applied to categorical input vectors which input vector is used for regression can you do regression on categorical input vectors can you calculate the regression model does a variable-length input have to be a categorical vector to be a regression? can you apply regression to categorical input vectors how to do regression from variable inputs which input is used in regression how to use data to perform regression regression from variable length input vectors can you apply regression on categorical vectors is it possible to apply regression on categorical input vectors can i use a regression vector with a categorical input vector? when can regression be used is it possible to apply regression in a dataset how can I run data regression using vector output how to use a regression vector