Order books

Statistical Testing with jamovi/JASP for Psychology

Exercises and case studies

Chapter 8 in the book contains basic exercises covering all of Section 2. Diverse tutors, however, have asked for traditional chapter by chapter exercises, hence the table immediately below. Further down the page, case studies are presented for readers who have finished reading the whole book, or their tutors.


These chapter by chapter exercises have been contributed by Marianne Vitug. For each chapter is a document with the questions, and one with the answers, with relevant spreadsheet files (with the .csv suffix). Each page opens in a new tab of your browser.

Ch 2 Research design Questions Answer self-entry
Ch 3 Descriptive statistics Questions Answers self-entry
Ch 4 Null hypothesis significance testing Questions Answers data file
Ch 5 Tests of differences Questions Answers data file 1
Ch 5 Tests of differences data file 2
Ch 5 Tests of differences data file 3
Ch 5 Tests of differences data file 4
Ch 6 Tests of relationships Questions Answers data file
Ch 7 Categorical analyses Questions Answers data file
Ch 10 Factorial ANOVA Questions Answers data file 1
Ch 10 Factorial ANOVA data file 2
Ch 10 Factorial ANOVA data file 3
Ch 11 ANCOVA Questions Answers data file
Ch 12 MANOVA Questions Answers data file
Ch 13 PCA and factor analysis Questions Answers data file 1
Ch 13 PCA and factor analysis data file 2
Ch 14 Logistic regression Questions Answers data file
Ch 15 Partial correlations Questions Answers data file
Ch 17 Bayesian statistics Questions Answers data file
Ch 18 Survival analysis (Kaplan-Meier) Questions Answers data file

Case studies

There are potential answers to each of these, but it may be a better learning experience for students and/or their tutors to do some wrangling.

You have a selection of different measures derived from studies of bullying at school. Are there different types of bully?

Looking at a battery of results from different personality tests, you wish to see if the 'Big Five' still stands as the most robust model of describing personality.

Do people who suffer severe psychological stress after loss of a loved one have different psychological characteristics from those bereaved people who do not require treatment? You believe that age, ethnicity and gender may also affect the classification.

Is a type of counselling likely to differ in its effectiveness depending on the type of presenting problem? For example, if we used cognitive-behavioural therapy, would it have very different effects on people whose main symptoms were alcoholism, gambling addiction and panic attacks? Age, ethnicity and gender may affect the classification.

You are interested in the willingness of people to leave money to charities. Which psychological attributes lead to large, medium and small bequests? You may wish to consider attributes such as the number of close relatives with a related condition or experience, the age and social class of the respondents.

Kidd and Castano (2013) found that reading novels, as opposed to popular fiction, non-fiction and nothing at all, improved empathy, as represented by Theory of Mind skill. You want to try this design out with young people with behavioural problems and see it has an effect on social skills, attitudes and behaviour.

You are interested in how long it takes children in care to receive long-term fostering. Are there differences between age groups, or ethnicity, or behavioural problems, or whether or not children have been sexually abused?

Three groups of adults with depression attend different clinics. One group receives CBT, another psychoanalysis and a third Rogerian therapy. Are there significant differences in remission symptoms and is there a difference between male and female patients?

Recruiters were shown functional resumes (Brits: cv's) and asked to rate them in terms of employability. The documents had different skills levels, with photographs of differing levels of attractiveness and differing age groups.

Sales representatives try out three different techniques for opening a discussion. Which works best, and are there differences dependent on reps' personal attributes? (Or, perhaps, the potential customers' attributes.)

Statistics without Mathematics series - General Editor: Cole Davis

ISBN numbers: Hardback - 978-1-9164779-3-3 Paperback - 978-1-9164779-2-6
                       Ebook - 978-1-9164779-9-5

statistics for psychology - don't panic!