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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

Answer»

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.



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