Given the command: Z <- array(h, dim=c(3,4,2)), Z[] with an empty subscript or Z with no subscript stands for:

What is the output for the command: > rep( c(1:2), each = 3)

The function "rescale()" exists in both the plotrix and psych packages. How can I ensure that the plotrix version is used to scale my vector "X" to between 1 and 2?

What is the output of the command: paste("O", "M", "G")

Which is NOT the parameter of command seq()?

Which is an invalid way to return the mean of each variable in a numeric data frame?

If Y is a multi-modal vector of integers, which R function would return all modes of Y (the most frequent value(s) of Y)?

What is the output of: rrr <- 5.45667; sprintf("%1.f", round(rrr, 3))

What values are displayed for the x-axis limits of the following plot? plot(c(0, 2), c(0, 1), xaxt="n", yaxt="n"); axis(side=2, labels=c("0", "10"), at=c(0,1))

Arrays are similar to matrices in R, but are different in what respect?

Let X be a n-dimension vector. Which call tests this particular statement: "no value of X is NA"