What is the length of the vector b <- 2:7?

What is an alternative way of defining margins?

The standard font determines the width of the text lines in the

What is the primary purpose of R Commander?

Which of the following functions actually fits the linear model?

Which of the following will produce a sequential vector c( (1,2,3,4,5,6,7,8,9)). 

Which of the following code creates an n-item vector of random normal deviates?

Which of the following R functions can be used to display the names of (most of) the objects currently stored in the R environment?

Which of the following statements would read the file "abc.txt"?

Which of the following statements about character quantities and character vectors in R is correct?