Biostatistics Portfolio II
Preface
1
Bird Song
1.1
Introduction
1.2
A Complex Experimental Design
1.2.1
The Outcome Is Skewed
1.2.2
The Measurements are Dependent
1.3
Analysis With a Mixed Model
1.3.1
Install Package
lmerTest
1.3.2
Load Package
lmerTest
1.3.3
Fit a Mixed Model With
lmer()
1.3.4
Interpreting the Output
1.3.5
Simplifying the model
1.3.6
Decide on the right model
1.3.7
Interpret the final output
1.4
Assignment: Data Cleaning
1.4.1
Read the data and look at the structure
1.4.2
Shorten variable names and change variable types
1.4.3
Fix errors in data entry
1.4.4
Plot your data
1.4.5
Inspect suspicious value(s)
1.4.6
Remove unrealistic value(s)
1.4.7
Remove values incorrectly marked “0”
1.4.8
Other changes
1.4.9
Run the analysis
References
Biostatistics Portfolio II
References