'Linear mixed model' presentation slideshows

Mixing it up: Mixed Models

Mixing it up: Mixed Models. Tracy Tomlinson December 11, 2009. Outline. What are fixed effects What are random effects How do I know if my effects are fixed or random Why do I care about fixed and random effects Mixed models SAS and mixed models SPSS and mixed models. Fixed Effects.

667 views • 51 slides

Nested and Paired recap

Nested and Paired recap. Nested and Paired sampling. When you have sampled one thing many times. Why? To handle pseudoreplication. or To reduce noise. Nested vs Paired tests. Nested A fixed factor above a random factor Paired A fixed factor within a random factor

524 views • 38 slides

388 views • 19 slides

Mixed Models Example Data Sets

Mixed Models Example Data Sets. Example 1: Apples (Schabenberger and Pierce 2002, page 464). Linear Mixed Model Clustered Longitudinal Data 3-12 apples per tree 10 trees 6 measurements (weekly) Yij = (Bo + boi) + (B1 + b1i)Xij + eij Y = apple diameter (inches) X = time (week).

301 views • 6 slides