Which function is used to find the amount of rows and columns in an array? (a) length(). (b) nchar(). (c) dim(). (d) dim len(). Which of the following is the correct statement in terms of tidy data? (a) Each row is an observation in tidy data. (b) Each column is a variable in tidy data. (c) Arranging your data in tidy way makes it easier to work. (d) All of the mentioned.
