Regression Wisdom

In class students finished a classwork activity on linear regression and turned in Investigative Task #4 - Smoking.  Afterwards, students learned about outliers, influential points and leverage.  It is very important to identify and distinguish between outliers and influential points.  Finally, we discussed what a lurking variable is...a lurking variable is an underlying variable that may cause association.  Examples include: 

       (a)  # of Firefighters (x) and cost of structure damage (y)....(lurking variable - size of fire)

       (b) # of TVs (x) and Life Expectancy (y)...(lurking variable - doctors/money spent on healthcare)


The notes are attached and the homework is listed below.


Notes - Regression Wisdom


HW - pgs. 214-221 (1-15 odd, 17, 21, 31)
          Read pgs. 222-236 - Re-Expressing the Data- For Fri. 10/24

         Investigative Task #5 - Olympic Long Jumps  - Due Fri. 10/24