How many basic or 'atomic' classes of objects does R have?

Factors are the R objects that are created using a _____.

Which of the following initiates an infinite loop right from the start? 

An ordered collection of objects or components are called ________

Axes, axis labels, and titles all appear in the ________ of the figure.

Which of the following functions returns a list of all the formal arguments of a function?

Which of the following functions truncates real numbers to integers?

Which of the following functions converts a matrix of phi coefficients to polychoric correlations?

Which of the following code drops the ith and jth columns?

 Which of the following statement would read file “foo.txt”?