To prepare for this module, please answer the following questions from the preparation readings and videos. Please contact the professor if you have questions.
  1. What are the names of the scientists who developed R?
  2. Where was R first developed?
  3. What is the difference between R and RStudio.
  4. Should you save the “workspace” in R?
  5. How do you assign the result of an expression to an object (i.e., how do you use the assignment operator)?
  6. How can you both assign the results of an expression to an object and see the results of that expression at the same time?
  7. What is a function in R?
  8. What are contained in the parentheses that follow a function name? What is the purpose of these items?
  9. How does a factor data type differ from a character data type?
  10. When entering data into Excel to create a CSV file, what type of information is organized into rows and what type is organized into columns?
  11. What should be entered into the first row when entering data into Excel to create a CSV file?
  12. What does the read.csv() function in R do?
  13. What does the headtail() function in R do?
  14. When is a $ used in R?
  15. What is the difference in R between a data.frame and a vector?
  16. What function in R is used to create a vector of items that are all of the same data type?