• Middlebury Math Department Fall Hike up Snake Mountain on Saturday October 22nd. Meet in front of Warner at 1pm.
  • Lookit. To recreate
    • Click Source Code on top left
    • Copy and paste into a new .Rmd file
    • Install the flexdashboard package by running install.packages("flexdashboard", type = "source") (more info on this package here)
    • Click “Run Document”
  • Comments about HW-2:
    • You’re still going to need to make a prediction on a user’s sex even if their job is listed as NA
    • Say I just guessed “female” for a random sample of 1000 users. What proportion of the time will I be right? Think of this fact when you compare male vs female proportions for a given level of a categorical variable.
  • Time spent on HW-1:
c(4,4,5,5,6,6.5,7,8,9,9,10,10,11,11,11) %>% boxplot(horizontal=TRUE)


  • Slides:
    • POSIX Unix Time
    • Introduction to lubridate package
  • In-class exercise:
    • Packages to install: Quandl
    • Code: Lec13.R

After-Class Updates