Learning Statistics with R - A tutorial for psychology students and other beginners, 2018a

• Basic commands. WetalkedabitaboutthelogicofhowR works and in particular how to type
commands into the R console (Section 3.2), and in doing so learned how to perform basic calculations
using the arithmetic operators +, -, *, / and ^. (Section 3.3)
• Introduction to functions. We saw several different functions, three that are used to perform numeric
calculations (sqrt(), abs(), round(); Section 3.5), one that applies to text (nchar(); Section 3.8.1),
and one that works on any variable (length(); Section 3.7.5). In doing so, we talked a bit about
how argument names work, and learned about default values for arguments. (Section 3.5.1)
• Introduction to variables. We learned the basic idea behind variables, and how to assign values to
variables using the assignment operator