Resampling-based methods for biologists

PeerJ. 2020 May 7:8:e9089. doi: 10.7717/peerj.9089. eCollection 2020.

Abstract

Ecological data often violate common assumptions of traditional parametric statistics (e.g., that residuals are Normally distributed, have constant variance, and cases are independent). Modern statistical methods are well equipped to handle these complications, but they can be challenging for non-statisticians to understand and implement. Rather than default to increasingly complex statistical methods, resampling-based methods can sometimes provide an alternative method for performing statistical inference, while also facilitating a deeper understanding of foundational concepts in frequentist statistics (e.g., sampling distributions, confidence intervals, p-values). Using simple examples and case studies, we demonstrate how resampling-based methods can help elucidate core statistical concepts and provide alternative methods for tackling challenging problems across a broad range of ecological applications.

Keywords: Bootstrap; Model uncertainty; Permutation; Randomization; Replication; Resampling; Statistical inference.

Grants and funding

John R. Fieberg received partial salary support from the Minnesota Agricultural Experimental Station and the McKnight Foundation. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.