2. Vocabulary and R functions

a) Enter the following command in R to read a simple help page about the length() command:

?length

What does the length function tell you?

b) Read section 3.4 about Measures of the Spread of Data. In your own words, give a rough description of what variance is (we will go into more detail in the next few weeks). Include an APA citation.

3. Task

Estimate how many hours you spent on this class in the past week, then list the days and times when you will spend an extra 3 hours to study during week 4 and beyond. Units 4 and beyond often require more study than the first few weeks did, but if you prepare your schedule, you can improve your chance of success.