To summarize, you can either type in your own data, using a command like x <- c(2,3,5…) where 2,3,5 represent individual values that are stored in a variable called x. Using similar commands, it is possible to build up a dataset from bottoms up. Other times, you can directly read in data from other software programs as outlined previously. The concepts you learned about the differences between matrix, data frame, lists and vectors will come in handy here.