# ec-40 - 1 February 12, 2009 It is E370 Time! Announcements...

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1 February 12, 2009 It is E370 Time!!! Announcements WarmUps Questions Today’s Goals: You should be able to calculate and interpret two measures of the strength of a potential linear relationship. use a Least Squares Line to describe a relationship between two variables and to make predictions. interpret a contingency table and define joint, marginal and conditional probabilities. perform a general test for independence. Next Time~~”Random” variables Announcements Good News! You are not responsible for Bayes’ Theorem! Peer Tutors have help sessions on Wednesday at 8:00 PM. They are in SPEA 151. Bring your questions about anything you are having trouble with or would like help with. Pie-A-Professor??? Oh, dear! MPG-Bar = 20.6 Pounds-Bar = 2983 σ xy = City MPG Pounds MPG Devs Pounds Devs Product 18 3545 17 3270 19 2960 22 2720 27 2420 () ( ) σ µµ XY iX iY i XY N = −−

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2 0 5 10 15 20 25 30 0 500 1000 1500 2000 2500 3000 3500 4000 Pounds City MPG σ xy and ρ () ( ) σ µµ
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## This note was uploaded on 04/19/2011 for the course ECON 200 taught by Professor Staff during the Winter '09 term at Indiana.

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ec-40 - 1 February 12, 2009 It is E370 Time! Announcements...

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