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Questions from Case StudiesTeacher Ratings (TR)7. (TR) What are the values of d and g?8. (TR) What are the values of ω2and η2?Smiles and Leniency (SL)9. (SL)What are the values of ω2and η2? 655
Obesity and Bias (OB)10. For compute ω2and partial ω2for the effect of “Weight” in a “Weight x Relatedness” ANOVA.656
20. Case Studies The case studies give examples of practical applications of statistical analyses. Many of the case studies contain the actual raw data. Some contain discussions of how the the data were analyzed.All links below are external links.1.Angry Moods2.Flatulence3.Physicians Reactions to Patient Size4.Teacher Ratings5.Mediterranean Diet and Health6.Smiles and Leniency7.Animal Research8.ADHD Treatment9.Weapons and Aggression10.SAT and College GPA11.Stereograms12.Driving13.Stroop Interference14.TV Violence15.Bias Against Associates of the Obese16.Shaking and Stirring Martinis17.Adolescent Lifestyle Choices18.Chocolate and Body Weight19.Bedroom TV and Hispanic Children20.Weight and Sleep Apnea21.Misusing SEM22.School Gardens and Vegetable Consumption23.TV and Hypertension24.Dietary Supplements25.Young People and Binge Drinking657
26.Sugar Consumption in the US Diet27.Nutrition Information Sources and Older Adults28.Mind Set Exercise and the Placebo Effect29.Predicting Present and Future Affect30.Exercise and Memory31.Parental Recognition of Child Obesity32.Educational Attainment and Racial, Ethnic, and Gender Disparity658
21. Glossary a priori Comparison A comparison that is planned before (a priori) conducting the experiment or at least before the data are examined. Absolute Deviation The absolute value of the difference between two numbers. The absolute deviation between 5 and 3 is 2; between 3 and 5 is 2; and between -4 and 2 it is 6. Alternative Hypothesis In hypothesis testing, the null hypothesis and an alternative hypothesis are put forward. If the data are sufficiently strong to reject the null hypothesis, then the null hypothesis is rejected in favor of an alternative hypothesis. For instance, if the null hypothesis were that μ1 = μ2then the alternative hypothesis (for a two-tailed test) would be μ1≠μ2. Analysis of Variance Analysis of variance is a method for testing hypotheses about means. It is the most widely-used method of statistical inference for the analysis of experimental data. Antilog Taking the anti-log of a number undoes the operation of taking the log. Therefore, since Log10(1000)= 3, the antilog10of 3 is 1,000. Taking the antilog of X raises the base of the logarithm in question to X. Average (i) The (arithmetic) mean (ii) Any measure of central tendency Bar Chart A graphical method of presenting data. A bar is drawn for each level of a variable. The height of each bar contains the value of the variable. Bar charts are useful for displaying things such as frequency counts and percent increases. They are not recommended for displaying means (despite the widespread practice) since box plots present more information in the same amount of space.