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. 2011 Sep;59(3):983-92.

Which statistics should tropical biologists learn?

Affiliations

Affiliation

  • 1 Biología Tropical, Universidad de Costa Rica, 2060 San José, Costa Rica. natalia.loaiza@ucr.ac.cr
  • PMID: 22017105

Which statistics should tropical biologists learn?

Natalia Loaiza Velásquez et al. Rev Biol Trop. 2011 Sep.
. 2011 Sep;59(3):983-92.

Affiliation

  • 1 Biología Tropical, Universidad de Costa Rica, 2060 San José, Costa Rica. natalia.loaiza@ucr.ac.cr
  • PMID: 22017105

Abstract

Tropical biologists study the richest and most endangered biodiversity in the planet, and in these times of climate change and mega-extinctions, the need for efficient, good quality research is more pressing than in the past. However, the statistical component in research published by tropical authors sometimes suffers from poor quality in data collection; mediocre or bad experimental design and a rigid and outdated view of data analysis. To suggest improvements in their statistical education, we listed all the statistical tests and other quantitative analyses used in two leading tropical journals, the Revista de Biología Tropical and Biotropica, during a year. The 12 most frequent tests in the articles were: Analysis of Variance (ANOVA), Chi-Square Test, Student's T Test, Linear Regression, Pearson's Correlation Coefficient, Mann-Whitney U Test, Kruskal-Wallis Test, Shannon's Diversity Index, Tukey's Test, Cluster Analysis, Spearman's Rank Correlation Test and Principal Component Analysis. We conclude that statistical education for tropical biologists must abandon the old syllabus based on the mathematical side of statistics and concentrate on the correct selection of these and other procedures and tests, on their biological interpretation and on the use of reliable and friendly freeware. We think that their time will be better spent understanding and protecting tropical ecosystems than trying to learn the mathematical foundations of statistics: in most cases, a well designed one-semester course should be enough for their basic requirements.

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