Question

If the function in a console is.matrix(X) returns true then X can be considered as a _______ (a) Matrix object (b) Matrix data object (c) Matrix vector (d) Vector This question was addressed to me by my school teacher while I was bunking the class. This intriguing question comes from Functions topic in division Control Structures, Functions, Scoping Rules, Loop Functions and Debugging of R Programming Select the correct answer from above options

Answer 1

Correct option is (b) Matrix data object The explanation is: The function call is.matrix(X) returns TRUE then X can be termed as a matrix data object. R has a large number of in-built functions and also the user can create their own functions.