Question

The ________ stores the nominal values as a vector of integers in the range of 1 to unique values in the nominal variable. (a) Factor (b) Matrix (c) Lists (d) Functions I got this question by my college professor while I was bunking the class. I would like to ask this question from Data Types in portion Nuts and Bolts and Getting Data In and Out of R Programming Select the correct answer from above options

Answer 1

Right choice is (a) Factor Easiest explanation: The factor stores the nominal values as a vector of integers in the range [1… k] (where k is the no. of unique values of the nominal variable), and an internal vector of character strings (the original values) mapped to these integers.