1 / 5 If you want to convert from wide to long form with the package reshape2 you use the function:
2 / 5 Which one of the following is not part of data preparation as defined and taught in this course?
3 / 5 What is the backup class of a data.table?
4 / 5 What language feature allows you to slice and dice data in very flexible ways?
5 / 5 With data-driven decision making, organizations use data for what purpose?