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A _________ is a two-dimensional rectangular data set.(a) Vector(b) Lists(c) Matrix(d) FunctionsI had been asked this question in an internship interview.This interesting question is from Data Types topic in division Nuts and Bolts and Getting Data In and Out of R Programming

Answer»

The correct choice is (c) Matrix

For explanation I would say: A matrix is a two-dimensional rectangular DATA set. It can be CREATED USING the vector input to a matrix function. The labels are always character irrespective of whether it is numeric or character and also BOOLEAN etc in the vector.



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