Day 41: Heart of Mathematics

• Last time: The average American.

• Today: More of the average!
  • Return project papers with comments
    • Good writing overall! Keep it up.
    • Interesting stuff! You're off to a good start.
  • More sneaky sampling (honest answers to embarrassing questions)
    • I.16 - a two-coin example

  • What do we mean by biased data? Examples?
    • II.2

  • What is the normal curve?
    • Measure of central tendency (mean)
    • Measure of Spread (standard deviation)
    • Plus or minus three standard deviations (68-95-99 rule)
    • Example: what correlation means.... How is it related to bias? (Use those 3-D glasses!)

  • How can we lie with measures of central tendency?

  • "Mean" problems for the section:
    • II.5
    • II.10
    • III.1.

• Next time: Poster prep day

Links

• GE Home: Making Customers Feel Six Sigma Quality (many standard deviations, very extreme - in this case, we hope it means very good, but it could mean the opposite...!