Math Studies II 10-13-10

NO BELLRINGER!!
DUE WEDNESDAY 10/20/10

• INTRODUCTION of the IA

Should include:

1. Title
2. Clear statement of the task:
3. Hypothesis
4. A plan ( in steps)
5. If you have a survey or experiment make sure you attach a sample of it to your introduction.

Also DONT USE WORDS SUCH AS

1. Causation
2. Random

Linear Correlation

• Used for quantitative data > get it through R-Value

We worked on pg. 581 of our text book problem number 3

• Diagnostics on (calculator)
• L1 = Judge A L2= Judge B
• Enter Data in calculator
• Then go to stat, calc, and choose nr. 4=lin.reg
• Your results should look like this:
• y=ax+b
• a=1.297979798
• b=-2.411616162
• r2=.8883643358
• r=.9425308142

Plug everything in the equation of a line formula given = y= 1.30x+-2.41

Then press Stat, plot 1 (on), Fix windows, and Graph it.... Now you have your graph :)

NO HOMEWORK FOR TONIGHT BUT YOU CAN START ON YOUR INTRODUCTION!!!

Question of the day: What is the difference between r2 and r?