This week, Eliis Hughes and I discuss factor variables, which are basically a numeric storage form of categorical variables that can be either unordered or ordered, depending on how you specify them. These variables are common to R (and other coding languages) as they use minimal memory for storage. We discuss what factors are, how to specify them, how to change levels of factors, and how they behave in regression models and when plotting data.
To watch our screen cast, CLICK HERE.
To access our code, CLICK HERE.