Which function is used to convert wide data to long data?

Which of the following has multiple columns?

 Which of the following is an example of a vector graphics device in R? 

______ is used to view the dataset in a spreadsheet-type format? 

 The purpose of fisher.test() is _______ test for contingency table. 

Which of the following functions is identical to read.table()?

Which function is used to add new variables/columns or transform existing variables?

___ variables are categorical variables which can hold either string or numeric values.

Which of the following code creates an 'n' item vector of random normal deviates?

When hypothesis tests and confidence limits are to be used, the residuals are assumed to follow the __________ distribution.