23.lastlecture.stud08

23.lastlecture.stud08 - Psyc 305 THE LAST DAY Announcements...

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Psyc 305 THE LAST DAY !!!
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Announcements Final Exam Friday May 9th; 2 - 4:30 pm; here Usual rules -- cheat sheet and calculator Optional EARLY Final Exam Wednesday May 7th; 2 - 4:30 pm; here Usual rules -- cheat sheet and calculator Extra Study Opportunities Review Session -- probably next Tues night. Professor Spellman Office Hours TW 3:30-5 this week and T next week Jaime regular office hours this Friday and next Monday
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Agenda for Today’s Class 1) Review Exam 3 scores. 2) Some thoughts on your surveys. 2) An Overview Review (It will go up on the website after class.) 3) A Fun Review (?) 4) Some details re: the final exam. 5) Some Parting Words.
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About Exam 3 Exam Mean Median SD 1 81 81 9.4 2 79 81 8.2 3 that depends A LOT
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About Exam 3 Exam Mean Median SD 1 81 81 9.4 2 79 81 8.2 3 Mon 81 83 9.5 3 Wed 69 70 14.1
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WHY? Mon = 81; Wed = 69 Harder Exam? Only 1 question was different. 6 points. Mon = 5.9 Wed = 3.5 That’s 2.4 -- where is the rest??? Different People? On Exam 2 Mon people = 82 Wed people = 78 Different Reasons?
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Exam 3 I need to fix grading of one question. Scores posted soon -- latest tomorrow afternoon. I will hand back Exam 3 here on Wednesday during normal class time and during office hours. I will post answer key soon.
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I loved your Surveys but… “My finding was not significant” -- p = .43. p-value p-value r N approx 100 N approx 1000 0.05 0.62 0.12 0.10 0.32 <0.01 0.15 0.13 <0.01 0.20 0.04 <0.01 0.25 0.01 <0.01 0.30 <0.01 <0.01 0.35 <0.01 <0.01 0.40 <0.01 <0.01 0.45 <0.01 <0.01 0.50 <0.01 <0.01 But… WHAT WAS r? What does significance depend on?
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Precision / Significant Digits Rate on the following 1 - 7 scale: 3, 4, 4, 4, 5, 7, 7 Mean = 4.8571429 maybe low maybe high prob rand 4 4.4 3.6 4.2 5 5.4 4.6 4.7 7 7 6.6 6.8 3 3.4 2.6 3.1 4 4.4 3.6 4.2 4 4.4 3.6 3.9 7 7 6.6 6.9 4.8571429 5.1428571 4.4571429 4.8285714
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Where We’ve Been Measurement (scales) Experiments -- you were in one The logic of scientific research Writing a report Getting good and useful data Designs: Observation, Naturalistic, Survey, Correlational, Differential -- we did a class survey Ethics Frequencies & Graphs Central Tendency & Variability Transformations and z-scores Correlation Regression Probability & Sampling -- we threw some dice Hypothesis Testing Using z to test hypotheses Confidence intervals Effect sizes Power
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Was this a. .. Math class? Statistics class? Methods class? Logic class?
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If it were up to me. .. Why Should I Believe You? Does your procedure, method, materials, statistics… justify the conclusions you are trying to convince me of?
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Logic of Science theory (deduction/ prediction) hypothesis IVs, DVs, op defs, controls, ethics experiment (research) interpretation (induction) (statistical inference) data
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Ill-Logic of Life. .. I heard something about that… My father told me that. .. It happened to a friend… I read this study where… What are the data? What was the procedure?
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This note was uploaded on 09/25/2008 for the course PSYCH 305 taught by Professor Freeman during the Fall '08 term at UVA.

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23.lastlecture.stud08 - Psyc 305 THE LAST DAY Announcements...

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