1.

Which of the following is not an object of R?(a) calls(b) expressions(c) strings(d) names

Answer» Correct choice is (c) strings

To explain I would say: Calls, expressions and names are the three types of objects that constitute the R language. There is really only one rule about vectors in R, which is that A vector can only contain objects of the same class. R objects can have names, which is very useful for writing readable code and self-describing objects.


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