Introduction to Statistics for the Social Sciences SBS200 - Lecture Section 001, Spring 2019 Room 150 Harvill Building 9:00 - 9:50 Mondays, Wednesdays & Fridays. March 29 http://www.youtube.com/watch?v=oSQJP40PcGI
Even if you have not yet registered your clicker you can still participate The Green Sheets
Before next exam (April 5th) Schedule of readings Before next exam (April 5th) Please read chapters 1 - 11 in OpenStax textbook Please read Chapters 2, 3, and 4 in Plous Chapter 2: Cognitive Dissonance Chapter 3: Memory and Hindsight Bias Chapter 4: Context Dependence
Labs continue next week Lab sessions Everyone will want to be enrolled in one of the lab sessions Labs continue next week
Writing Assignment – Quiz
Writing Assignment – Quiz
Writing Assignment – Quiz Number of groups - 1 Number of people – number of groups
Writing Assignment – Quiz Type of Incentive Number of cookies sold 3 No effect of type of incentive on the number of cookies sold Claim there is an effect when there is no effect of incentive 10 12 14 2 12 3.89
Writing Assignment – Quiz 2 20 2.73 12 7.33 14 No The average number of cookies sold for three different incentives were compared. The mean number of cookie boxes sold for the “Hawaii” incentive was 14 , the mean number of cookies boxes sold for the “Bicycle” incentive was 12, and the mean number of cookies sold for the “No” incentive was 10. An ANOVA was conducted and there appears to be no significant difference in the number of cookies sold as a result of the different levels of incentive F(2, 12) = 2.73; n.s. 12
Writing Assignment – Quiz t-test if two means ANOVA if more than 2 If you know the population standard deviation use “z” If you only know sample standard deviation use “t” n - 2 All mean same thing All mean same thing
Writing Assignment – Quiz Total Variability Within Group Variability Between Group Variability
Writing Assignment – Quiz Type of running shoe Running Speed 1 (Type of Running Shoe) 3 (Type 1, Type 2 and Type 3) 3.37 Yes
Writing Assignment – Quiz Hand in Worksheet
Thank you! See you next time!!