PPT-Multiple Comparisons Overall Risk of Type I Error in Using Repeated t Tests at

005 ANOVA Graphical Example ANOVA terms Treatment 1 Treatment 2 Treatment 3 1 y 11 48 y 21 40 y 31 39 2 y 12 39 y 22 48 y 32 30 3 y 13 42. AMS 572 Group 5. Outline. Jia. Chen: Introduction of repeated measures ANOVA. Chewei. Lu: One-way repeated measures . Wei Xi: Two-factor repeated measures. Tomoaki. Sakamoto : Three-factor repeated measures. ANOVA can determine if there are differences among the treatments, but what is the nature of those differences?. Are the treatments measured on a continuous scale? . Look at response surfaces (linear regression, polynomials). Comparing more than two means and figuring out which are different. Analysis of Variance (ANOVA). Despite the name, the procedures compares the means of two or more groups. Null hypothesis is that the group means are . STAT 250. Dr. Kari Lock Morgan. SECTION 4.3, 4.5. Type I and II errors (4.3). Statistical versus practical significance (4.5). Multiple testing (4.5). There are four possibilities:. Errors. Reject H. Statistical . tests. Descriptive. . statistics. : . Description . of. . observations. Probability. . theory. : . Theoretical. . considerations. . (. no. . empirical. . data. ). Statistical . tests. Comfort Ratings of 13 Fabric Types. A.V. . Cardello. , C. . Winterhalter. , and H.G. Schultz (2003). "Predicting the Handle and Comfort of Military Clothing Fabrics from Sensory and Instrumental Data: Development and Application of New Psychophysical Methods," Textile Research Journal, Vol. 73, pp. 221-237. . Measures of LD. Jess Paulus, ScD. January 29, 2013. . Today’s topics. Multiple comparisons. Measures of Linkage disequilibrium. D’ and r. 2. r. 2. and power. Multiple testing & significance thresholds. Comfort Ratings of 13 Fabric Types. A.V. . Cardello. , C. . Winterhalter. , and H.G. Schultz (2003). "Predicting the Handle and Comfort of Military Clothing Fabrics from Sensory and Instrumental Data: Development and Application of New Psychophysical Methods," Textile Research Journal, Vol. 73, pp. 221-237. . Zero In on the Null. To . perform a hypothesis test, the null must be a statement about the value of a parameter for a model. . We then use this value to compute the probability that the . observed. sample statistic—or something even farther from the null value—might occur.. A PRIORI . OR PLANNED CONTRASTS. ANOVA. ANOVA is used to compare means. . However, if a difference is detected, and more than two means are being compared, . ANOVA cannot tell you . where the difference lies.. rejects a null true HType I a Type I error is made. In a single comparison this is the value When comparing 3 or more treatment means there are at least 2 kinds of This is the number of type I err It’s no secret that this world we live in can be pretty stressful sometimes. If you find yourself feeling out-of-sorts, pick up a book.According to a recent study, reading can significantly reduce stress levels. In as little as six minutes, you can reduce your stress levels by 68%. testing. .. Problems. and . some. solutions.. Hans Burgerhof. j.g.m.burgerhof@umcg.nl. February. 12 2019. . Help! Statistics! Lunchtime Lectures. When?. Where?. What?. Who?. Feb. 12 2019. Room 16. Significance Tests and Decision Making. Statistics and Probability with Applications, 3. rd. Edition. Starnes & Tabor. Bedford Freeman Worth Publishers. Significance Tests and Decision Making. Learning Targets.