Which file contains settings that R uses for all users of a given installation of R?

If mdf is a data frame, which statement is true ?

A list can contain a list as an element. MyList has five columns, and the third column's item is a list of three items. How do you put all seven values in MyList into a single vector?

Which strings could be returned by the function ls(path = "^V")?

StDf is a data frame. Based on this knowledge, what does this statement return? StDf[, -1]

Which statement enables you to interactively open a single file?

How does one obtain the FIRST element of x when x <- 1:9?

Which R function provides a histogram of the numeric vector X?

Which R function provides basic descriptive summary statistics for a numeric vector x?

Which R code will sort the vector X <- c(1,5,3,9,7) from largest to smallest?

Which R function imports a comma separated file "X.csv"?