1 Introduction
1.2 Aim of this book
- The intended use of this text is to introduce the most useful types of statistical analysis including linear models and their generalized linear model (GLM) extensions
- The approach is to learn by doing using real datasets relating to biological and environmental sciences
1.5 Scope
- The focus is on linear model framework since this applies to biological sciences well
- GLMs are introduced for non-normal distributions
1.6 What is not covered
- Non-linear regression approaches, generalized additive models, non-parametric approaches
1.7 The approach
- Most of the methods in this text belong to the ‘classist frequentist statistics’
- This approach has come under scrutiny due to its reliance on probability (p) values and lowered emphasis on effect sizes (estimates and intervals)
- The author is also pretty vocal about this criticism so he uses estimation-based approaches that focuses on estimates and confidence intervals where possible
- He also uses a priori contrasts (comparisons that were planned in advance) and encourages avoidiing the inappropriate overuse of multiple testing and instead to implement a more thoughtful/planned approach