Tip: Repeating an earlier point: How does one build a house? There of course is no set formula. One has various tools and materials, and the goal is to put these together in a creative way to produce the end result, the house.
It’s the same with R. The tools here are the various functions, e.g.
mean and which, and the materials are one’s data. One then must
creatively put them together to achieve one’s goal, say ferreting out
patterns in ridership in a public transportation system. Again, it is a
creative process; there is no formula for anything. But that is what
makes it fun, like solving a puzzle.
And…we can combine various functions in order to build our own functions. This will come in future lessons.