Statistical and Data Handling Skills in Biology

Statistical and Data Handling Skills in Biology

Paperback

By (author) Roland Ennos

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  • Publisher: Prentice-Hall
  • Format: Paperback | 296 pages
  • Dimensions: 211mm x 244mm x 20mm | 590g
  • Publication date: 15 March 2012
  • Publication City/Country: Harlow
  • ISBN 10: 0273729497
  • ISBN 13: 9780273729495
  • Edition: 3, Revised
  • Edition statement: 3rd Revised edition
  • Sales rank: 315,303

Product description

The ability to expertly analyse statistical data is a crucial skill in the biological sciences – it is fundamental to fully understanding what your experiments are actually telling you.  Statistical and Data Handling Skills in Biology gives you everything you need to master statistical analysis. Written in a straight-forward and easy to understand style it presents all of the tests you will need throughout your studies, and shows you how to choose the right tests to get the most out of your experiments. All of this is done in the context of biological examples so you can see just how relevant a skill this is, and how mastering it will make you a more rounded scientist.

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Review quote

'It is much improved by virtue of the addition of a second software to the supported platforms, and the layout too is greatly improved. The first chapter is excellent for demystifying stats which remains our greatest bugbear.' - Dr Andy Foggo, Marine Biology and Ecology Research Centre, University of Plymouth"a well-written, clearly-illustrated and user-friendly guidebook that explains the mysteries of biostatistics without either oversimplifying or scaring off first-year students with complex-looking equations. [...] There are lots of basic statistics textbooks out there, but this is one of the best." - Reviewed by Ana Claudia Mendes Malhado in The Biologist

Table of contents

1 An Introduction to Statistics 1.1 Becoming a research biologist 1.2 Awkward questions 1.3 Why do biologists have to repeat everything? 1.4 Why do biologists have to bother with statistics? 1.5 Why is statistical logic so strange? 1.6 Why are there are so many statistical tests? 1.7 Using the decision chart 1.8 Using this book 2 Dealing with variation 2.1 Introduction 2.2 Examining the distribution of data 2.3 The normal distribution 2.4 Describing the normal distribution 2.5 The variability of samples 2.6 Confidence limits 2.7 Presenting descriptive statistics and confidence limits 2.8 Introducing computer packages 2.9 Calculating descriptive statistics 2.10 Self assessment problems 3 Testing for normality and transforming data 3.1 The importance of normality testing 3.2 The Kolgomorov-Smirnov test 3.3 What to do if your data has a significantly different distribution from the normal 3.4 Examining data in practice 3.5 Transforming data 3.6 The complete testing procedure 3.7 Self-assessment problems 4 Testing for differences between one or two groups 4.1 Introduction 4.2 Why we need statistical tests for differences 4.3 How we test for differences 4.4 One and two tailed tests 4.5 The types of t test and their non parametric equivalents 4.6 The one sample t test 4.7 The paired t test 4.8 The two-samplet test 4.9 Introduction to non parametric tests for differences 4.10 The one sample sign test 4.11 The Wilcoxon matched pairs test 4.12 The Mann-Whitney U test 4.13 Self assessment problems 5 Testing for difference between more than two groups: ANOVA and its non parametric equivalents 5.1 Introduction 5.2 One way ANOVA 5.3 Deciding which groups are different -- post hoc tests 5.4 Presenting the results of one way ANOVA's 5.5 Repeated measures ANOVA 5.6 The Kruskall-Wallis test 5.7 The Friedman test 5.8 Two way ANOVA 5.9 The Scheirer-Ray-Hare test 5.10 Nested ANOVA 5.11 Self assessment problems 6 Investigating relationships 6.1 Introduction 6.2 Examining data for relationships 6.3 Examining graphs 6.4 Linear relationships 6.5 Statistical tests for linear relationships 6.6 Correlation 6.7 Regression 6.8 Studying common non-linear relationships 6.9 Dealing with non normally distributed data: rank correlation 6.10 Self assessment problems 7 Dealing with Categorical Data 7.1 Introduction 7.2 The problem of variation 7.3 The /2 test for differences 7.4 The /2 test for associations 7.5 Validity of /2 tests 7.6 Logistic regression 7.7 Self assessment problems 8 Designing Experiments 8.1 Introduction 8.2 Preparation 8.3 Excluding confounding variables 8.4 Replication and pseudoreplication 8.5 Randomisation and blocking 8.6 Choosing the statistical test 8.7 Choosing the number of replicates: power calculations 8.8 Dealing with your results 8.9 Self assessment problems 9 More complex statistical analysis 9.1 Introduction to complex statistics 9.2 Experiments investigating several factors 9.3 Experiments in which you cannot control all the variables 9.4 Investigating the relationships between several variables 9.5 Exploring data to investigate groupings 10 Dealing with measurements and units 10.1 Introduction 10.2 Measuring 10.3 Converting to SI units 10.4 Combining values 10.5 Expressing the answer 10.6 Doing all three steps 10.7 Constants and formulae 10.8 Using calculations 10.9 Logarithms, graphs and pH 10.10 Self assessment problems Glossary Further reading Solutions Statistical Tables Table S1: Critical values for the t statistic Table S2: Critical values for the correlation coefficient r Table S3: Critical values for the c2statistic Table S4: Critical values for the Wilcoxon T statistic Table S5: Critical values for the Mann-Whitney U statistic Table S6: Critical values for the Friedman c2statistic Table S7: Critical values for the Spearman rank correlation coefficient r