Question

Data frames can have additional attributes such as __________ (a) Rowname() (b) Rownames() (c) R.names() (d) D.names() This question was addressed to me at a job interview. I want to ask this question from Data Types topic in division Nuts and Bolts and Getting Data In and Out of R Programming Select the correct answer from above options

Answer 1

Right option is (b) Rownames() To explain I would say: Data frames can have additional attributes such as rownames(), which can be useful for annotating data, like subject_id or sample_id. But most of the time they are not used. A data frame is an important data type in R.