Why Is My Evil Lecturer Forcing Me to Learn Statistics?
What will this chapter tell me?
What the hell am I doing here? I don′t belong here
Initial observation: finding something that needs explaining
Generating theories and testing them
Data collection 1: what to measure
Data collection 2: how to measure
Analysing data
What have I discovered about statistics?
Key terms that I′ve discovered
Smart Alex′s tasks
Further reading
Interesting real research
Everything You Ever Wanted to Know About Statistics (Well, Sort
of)
What will this chapter tell me?
Building statistical models
Populations and samples
Simple statistical models
Going beyond the data
Using statistical models to test research questions
What have I discovered about statistics?
Key terms that I′ve discovered
Smart Alex′s tasks
Further reading
Interesting real research
The R Environment
What will this chapter tell me?
Before you start
Getting started
Using R
Getting data into R
Entering data with R Commander
Using other software to enter and edit data
Saving Data
Manipulating Data
What have I discovered about statistics?
R Packages Used in This Chapter
R Functions Used in This Chapter
Key terms that I′ve discovered
Smart Alex′s Tasks
Further reading
Exploring Data with Graphs
What will this chapter tell me?
The art of presenting data
Packages used in this chapter
Introducing ggplot2
Graphing relationships: the scatterplot
Histograms: a good way to spot obvious problems
Boxplots (box-whisker diagrams)
Density plots
Graphing means
Themes and options
What have I discovered about statistics?
R packages used in this chapter
R functions used in this chapter
Key terms that I′ve discovered
Smart Alex′s tasks
Further reading
Interesting real research
Exploring Assumptions
What will this chapter tell me?
What are assumptions?
Assumptions of parametric data
Packages used in this chapter
The assumption of normality
Testing whether a distribution is normal
Testing for homogeneity of variance
Correcting problems in the data
What have I discovered about statistics?
R packages used in this chapter
R functions used in this chapter
Key terms that I′ve discovered
Smart Alex′s tasks
Further reading
Correlation
What will this chapter tell me?
Looking at relationships
How do we measure relationships?
Data entry for correlation analysis
Bivariate correlation
Partial correlation
Comparing correlations
Calculating the effect size
How to report correlation coefficents
What have I discovered about statistics?
R packages used in this chapter
R functions used in this chapter
Regression
What will this chapter tell me?
An Introduction to regression
Packages used in this chapter
General procedure for regression in R
Interpreting a simple regression
Multiple regression: the basics
How accurate is my regression model?
How to do multiple regression using R Commander and R
Testing the accuracy of your regression model
Robust regression: bootstrapping
How to report multiple regression
Categorical predictors and multiple regression
What have I discovered about statistics?
R packages used in this chapter
R functions used in this chapter
Key terms that I′ve discovered
Smart Alex′s tasks
Further reading
Interesting real research
Logistic Regression
What will this chapter tell me?
Background to logistic regression
What are the principles behind logistic regression?
Assumptions and things that can go wrong
Packages used in this chapter
Binary logistic regression: an example that will make you feel
eel
How to report logistic regression
Testing assumptions: another example
Predicting several categories: multinomial logistic regression
What have I discovered about statistics?
R packages used in this chapter
R functions used in this chapter
Key terms that I′ve discovered
Smart Alex′s tasks
Further reading
Interesting real research
Comparing Two Means
What will this chapter tell me?
Packages used in this chapter
Looking at differences
The t-test
The independent t-test
The dependent t-test
Between groups or repeated measures?
What have I discovered about statistics?
R packages used in this chapter
R functions used in this chapter
Key terms that I′ve discovered
Smart Alex′s tasks
Further reading
Interesting real research
Comparing Several Means: ANOVA (GLM 1)
What will this chapter tell me?
The theory behind ANOVA
Assumptions of ANOVA
Planned contrasts
Post hoc procedures
One-way ANOVA using R
Calculating the effect size
Reporting results from one-way independent ANOVA
What have I discovered about statistics?
R packages used in this chapter
R functions used in this chapter
Key terms that I′ve discovered
Smart Alex′s tasks
Further reading
Interesting real research
Analysis of Covariance, ANCOVA (GLM 2)
What will this chapter tell me?
What is ANCOVA?
Assumptions and issues in ANCOVA
ANCOVA using R
Robust ANCOVA
Calculating the effect size
Reporting results
What have I discovered about statistics?
R packages used in this chapter
R functions used in this chapter
Key terms that I′ve discovered
Smart Alex′s tasks
Further reading
Interesting real research
Factorial ANOVA (GLM 3)
What will this chapter tell me?
Theory of factorial ANOVA (independant design)
Factorial ANOVA as regression
Two-Way ANOVA: Behind the scenes
Factorial ANOVA using R
Interpreting interaction graphs
Robust factorial ANOVA
Calculating effect sizes
Reporting the results of two-way ANOVA
What have I discovered about statistics?
R packages used in this chapter
R functions used in this chapter
Key terms that I′ve discovered
Smart Alex′s tasks
Further reading
Interesting real research
Repeated-Measures Designs (GLM 4)
What will this chapter tell me?
Introduction to repeated-measures designs
Theory of one-way repeated-measures ANOVA
One-way repeated measures designs using R
Effect sizes for repeated measures designs
Reporting one-way repeated measures designs
Factorisal repeated measures designs
Effect Sizes for factorial repeated measures designs
Reporting the results from factorial repeated measures designs
What have I discovered about statistics?
R packages used in this chapter
R functions used in this chapter
Key terms that I′ve discovered
Smart Alex′s tasks
Further reading
Interesting real research
Mixed Designs (GLM 5)
What will this chapter tell me?
Mixed designs
What do men and women look for in a partner?
Entering and exploring your data
Mixed ANOVA
Mixed designs as a GLM
Calculating effect sizes
Reporting the results of mixed ANOVA
Robust analysis for mixed designs
What have I discovered about statistics?
R packages used in this chapter
R functions used in this chapter
Key terms that I′ve discovered
Smart Alex′s tasks
Further reading
Interesting real research
Non-Parametric Tests
What will this chapter tell me?
When to use non-parametric tests
Packages used in this chapter
Comparing two independent conditions: the Wilcoxon rank-sum
test
Comparing two related conditions: the Wilcoxon signed-rank test
Differences between several independent groups: the Kruskal-Wallis
test
Differences between several related groups: Friedman′s ANOVA
What have I discovered about statistics?
R packages used in this chapter
R functions used in this chapter
Key terms that I′ve discovered
Smart Alex′s tasks
Further reading
Interesting real research
Multivariate Analysis of Variance (MANOVA)
What will this chapter tell me?
When to use MANOVA
Introduction: similarities and differences to ANOVA
Theory of MANOVA
Practical issues when conducting MANOVA
MANOVA using R
Robust MANOVA
Reporting results from MANOVA
Following up MANOVA with discriminant analysis
Reporting results from discriminant analysis
Some final remarks
What have I discovered about statistics?
R packages used in this chapter
R functions used in this chapter
Key terms that I′ve discovered
Smart Alex′s tasks
Further reading
Interesting real research
Exploratory Factor Analysis
What will this chapter tell me?
When to use factor analysis
Factors
Research example
Running the analysis with R Commander
Running the analysis with R
Factor scores
How to report factor analysis
Reliability analysis
Reporting reliability analysis
What have I discovered about statistics?
R Packages Used in This Chapter
R Functions Used in This Chapter
Key terms that I′ve discovered
Smart Alex′s tasks
Further reading
Interesting real research
Categorical Data
What will this chapter tell me?
Packages used in this chapter
Analysing categorical data
Theory of Analysing Categorical Data
Assumptions of the chi-square test
Doing the chi-square test using R
Several categorical variables: loglinear analysis
Assumptions in loglinear analysis
Loglinear analysis using R
Following up loglinear analysis
Effect sizes in loglinear analysis
Reporting the results of loglinear analysis
What have I discovered about statistics?
R packages used in this chapter
R functions used in this chapter
Key terms that I′ve discovered
Smart Alex′s tasks
Further reading
Interesting real research
Multilevel Linear Models
What will this chapter tell me?
Hierarchical data
Theory of multilevel linear models
The multilevel model
Some practical issues
Multilevel modelling on R
Growth models
How to report a multilevel model
What have I discovered about statistics?
R packages used in this chapter
R functions used in this chapter
Key terms that I′ve discovered
Smart Alex′s tasks
Further reading
Interesting real research
Epilogue: Life After Discovering Statistics
Troubleshooting R
Glossary
Appendix
Table of the standard normal distribution
Critical Values of the t-Distribution
Critical Values of the F-Distribution
Critical Values of the chi-square Distribution
References
Andy Field is Professor of Quantitative Methods at the
University of Sussex. He has published widely (100+ research
papers, 29 book chapters, and 17 books in various editions) in the
areas of child anxiety and psychological methods and statistics.
His current research interests focus on barriers to learning
mathematics and statistics.
He is internationally known as a statistics educator. He has
written several widely used statistics textbooks
including Discovering Statistics Using IBM SPSS
Statistics (winner of the 2007 British Psychological Society
book award), Discovering Statistics Using R, and An
Adventure in Statistics (shortlisted for the British
Psychological Society book award, 2017; British Book Design and
Production Awards, primary, secondary and tertiary education
category, 2016; and the Association of Learned & Professional
Society Publishers Award for innovation in publishing, 2016), which
teaches statistics through a fictional narrative and uses graphic
novel elements. He has also written
the adventr and discovr packages for the
statistics software R that teach statistics and R through
interactive tutorials.
His uncontrollable enthusiasm for teaching statistics to
psychologists has led to teaching awards from the University of
Sussex (2001, 2015, 2016, 2018, 2019), the British Psychological
Society (2006) and a prestigious UK National Teaching fellowship
(2010).
He′s done the usual academic things: had grants, been on editorial
boards, done lots of admin/service but he finds it tedious trying
to remember this stuff. None of them matter anyway because in the
unlikely event that you′ve ever heard of him it′ll be as the ′Stats
book guy′. In his spare time, he plays the drums very noisily in a
heavy metal band, and walks his cocker spaniel, both of which he
finds therapeutic.
Jeremy Miles, RAND Corporation, USA. Zoë Field, University of
Sussex, UK
In statistics, R is the way of the future. The big boys and girls
have known this for some time: There are now millions of R users in
academia and industry. R is free (as in no cost) and free (as in
speech). Andy, Jeremy, and Zoe′s book now makes R accessible to the
little boys and girls like me and my students. Soon all classes in
statistics will be taught in R. I have been teaching R to
psychologists for several years and so I have been waiting for this
book for some time. The book is excellent, and it is now the course
text for all my statistics classes. I′m pretty sure the book
provides all you need to go from statistical novice to working
researcher. Take, for example, the chapter on t-tests. The chapter
explains how to compare the means of two groups from scratch. It
explains the logic behind the tests, it explains how to do the
tests in R with a complete worked example, which papers to read in
the unlikely event you do need to go further, and it explains what
you need to write in your practical report or paper. But it also
goes further, and explains how t-tests and regression are
related---and are really the same thing---as part of the general
linear model. So this book offers not just the step-by-step
guidance needed to complete a particular test, but it also offers
the chance to reach the zen state of total statistical
understanding.
Prof. Neil Stewart
Warwick University Field′s Discovering Statistics is popular with
students for making a sometimes deemed inaccessible topic
accessible, in a fun way. In Discovering Statistics Using R, the
authors have managed to do this using a statistics package that is
known to be powerful, but sometimes deemed just as inaccessible to
the uninitiated, all the while staying true to Field′s off-kilter
approach.
Dr Marcel van Egmond
University of Amsterdam Probably the wittiest and most amusing of
the lot (no, really), this book takes yet another approach: it is
958 pages of R-based stats wisdom (plus online accoutrements)... A
thoroughly engaging, expansive, thoughtful and complete guide to
modern statistics. Self-deprecating stories lighten the tone, and
the undergrad-orientated ′stupid faces′ (Brian Haemorrhage, Jane
Superbrain, Oliver Twisted, etc.) soon stop feeling like a gimmick,
and help to break up the text with useful snippets of stats wisdom.
It is very mch a student textbook but it is brilliant... Field et
al. is the complete package.
David M. Shuker
AnimJournal of Animal Behaviour
"This work should be in the library of every institution where
statistics is taught. It contains much more content than what is
required for a beginning or advanced undergraduate course, but
instructors for such courses would do well to consider this book;
it is priced comparably to books which contain only basic material,
and students who are fascinated by the subject may find the
additional material a real bonus. The book would also be very good
for self-study. Overall, an excellent resource."
*Choice*
The main strength of this book is that it presents a lot of
information in an accessible, engaging and irreverent way. The
style is informal with interesting excursions into the history of
statistics and psychology. There is reference to research papers
which illustrate the methods explained, and are also very
entertaining. The authors manage to pull off the Herculean task of
teaching statistics through the medium of R... All in all, an
invaluable resource.
*Paul Webb*
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