Get out Problems 1 & 2 from yesterday!
Reminders:
- Must turn in Survey’s by Friday! (unless I have already
talked to you)
- Test on Friday!!! (Review Tomorrow)
May 2nd 2012
From Yesterday
There are 2 ways to find Median-Median Line
- Either with the 5 steps we talked about
Tuesday (not the ones from yesterday) or
- In the book pg. 476-477
Questions over Problems 1 & 2
Questions over Problems 1 & 2
Causation
(Student Text pg. 506-507)
Causation is when one event causes a second
one.
- A correlation is a necessary condition for a
causation, but a correlation is not a sufficient
condition for causation.
- Finding a correlation is straightforward, using
statistics to establish causation is VERY difficult
Ex: Many medical studies have tried to prove that smoking
causes lung cancer.
• Is smoking a necessary condition for lung cancer? Why or why not?
• Is smoking a sufficient condition for lung cancer? Why or why not?
• Is there a correlation b/w people who smoke and people who get lung
cancer? Explain.
• Is it true that smoking causes lung cancer? If so, how was it proven?
What type of regression equation would best model the data
in the following graphs?
Linear, quadratic, or exponential?
Classwork Assignment
Work on Review 1 Worksheet