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_________ variables are categorical variables which can hold either string or numeric values.

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_________ variables are categorical variables which can hold either string or numeric values. (a) Factor (b) Simpler (c) Function (d) Package I have been asked this question in an online quiz. This interesting question is from Functions in section Control Structures, Functions, Scoping Rules, Loop Functions and Debugging of R Programming Select the correct answer from above options

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Correct answer is (a) Factor The explanation is: Factor variables are categorical variables that hold the string or numeric values. Factor variables are used in various types of graphics and particularly for statistical modelling where a correct number of degrees of freedom is assigned to them.

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