Lecture 2 - Background - correct more often than people...

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PSYCH 301W Lecture 2 1 Lecture 2 - Background Psych 301W August 26 th , 2009 Demo What is your answer based on? Intuition How do we know if we are right? Empirical Observations Based on systematic data collection Analyze the numbers Trial “envelope” w/ $ Guess Stay/Switch Win/Lose 1 A B Stay Lose 2 C C Stay Win 3 B C Switch Win 4 B A Switch Win 5 A A Switch Lose 6 C B Stay Lose 7 A A Stay Win 20 C B Stay Lose
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PSYCH 301W Lecture 2 2 Total Everything Stay/Switch # Times # Wins % Wins Stay 15 5 33 Switch 5 3 60 Importance of Empirical Observations Surprisingly, undergraduate students were
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Unformatted text preview: correct more often than people with doctorates (28% vs. 7%) Without collecting data, we would have been misled by our intuition Final Four Penn State Duke North Carolina Ohio State North Carolina Penn State Penn State Penn State Duke North Carolina Ohio State Envelope A Envelope B Envelope C .25 .25 .25 .25 North Carolina .50 .33 .67 Envelope B Next week Only sections 9 & 10 (Monday sections) have lab The following week is Labor Day...
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This note was uploaded on 09/23/2010 for the course STAT 100 at Pennsylvania State University, University Park.

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Lecture 2 - Background - correct more often than people...

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