A data frame is one of the basic, built-in data structures in R, which was released in 1993. And R was based on an even older S. So it’s not a new thing. If y

A data frame is one of the basic, built-in data structures in R, which was released in 1993. And R was based on an even older S. So it’s not a new thing. If you don’t work in computational statistics / data science it might not be a well known term, though.