Statistical Contrasts for Addressing Specific Scientific Hypotheses скачать в хорошем качестве

Statistical Contrasts for Addressing Specific Scientific Hypotheses

Contrasts are linear combinations of group means that sum to zero. These contrasts are often useful for answering scientific questions. Three example contrasts are demonstrated using the mice lifetime data set. The statistical software R with the emmeans package are used to compute contrasts and inferential quantities. Probability playlist:    • STAT 587 - Probability   Inference playlist:    • STAT 587 - Inference   Regression playlist:    • STAT 587 - Regression   STAT 587: https://www.jarad.me/courses/stat587Eng/ STAT 587 Videos: https://www.jarad.me/courses/stat587E... Slides: https://www.jarad.me/courses/stat587E... R code: https://www.jarad.me/courses/stat587E... Amazon affiliate links to props: Tetris light: https://amzn.to/3g8BXde Dragonwood: https://amzn.to/3k96IS7 Jumbo penny: https://amzn.to/3g8BXde Jumbo quarter: ?? DCI Science Quiz Wal Clock: https://amzn.to/3g8BXde Foam dice: https://amzn.to/3g8BXde TIX LED Clock: https://www.geekalerts.com/tix-led-cl... Bicycle Playing Cards: https://amzn.to/2E36Na8 Recording in progress door hang sign: https://amzn.to/3la32Av Chapters: 00:00 Introduction 00:55 Mice lifetime data plot 02:12 ANOVA and regression Models 03:37 Scientific questions 06:45 Contrasts 07:41 Inference on contrasts 10:07 Contrasts for mice lifetime data 10:57 Multiple regression model fit 11:18 Estimate group means (emmeans::emmeans) 13:44 Summary