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if you have some backgrounds and statistics youamp;#39;ll have heard about categorical variables unlike numerical variables categorical variables can only take up a limited number of different values otherwise puts a categorical variable can only belong to a limited number of categories as ours does distich of programming language itamp;#39;s not a surprise that there exists a specific data structure for this to factor if you store categorical data as factors you can rest assured that all the statistical modeling techniques will handle such data correctly a good example of a categorical variable is a personamp;#39;s blood type it can be a B a B or Oh suppose you have asked eight people what their blood type is and record it information as a vector blood now for art is not yet clear that youamp;#39;re dealing with categorical variables or factors here to convert this factor to a factor you can use the factor function the printout looks somewhat different than the original one there
