cm010 2014-10-06 Monday overview

• HW04 will be due before class Wednesday 2014-10-08.
• HW05 will be due before class Wednesday 2014-10-15 at the earliest. I’m still thinking about Wednesday vs Friday as HW submission day for next half of term….
• Anyone want to review material related to the HW?
  • Guided challenge: write function to regress life expectancy on year and return the estimated intercept and slope
  • Use plyr::ddplyr() to apply this function to each country in Gapminder
• Today
  • Data aggregation, lingering questions?
  • Be the boss of your factors still needs work but go ahead and enjoy!
  • Indicative code from our hands on activities
• Wednesday (tentative) 2014-10-08
  • File I/O
  • ?Tidy data? regardless, this topic will appear in STAT 547
• Wednesday (tentative) 2014-10-15
  • Back to figs: effective graphs, be the boss of colors