Overview
Resources
Exercises
Readings
Quiz

This workshop covers:

Sampling
Hypothesis testing
Statistical power
Data types
Preparing data
Missing data

Slides (Google Slides)
Recording (Virtual Room)

Power
- Exercise (docx)
- Answers (docx)
Data screening
- Exercise (docx)
- Data (omv)
- Results (omv)
- Answers (docx)
Internal consistency and composite scores
- Exercise (docx)
- Data (omv)
- Results (omv)
- Answers (docx)
- Recording (2023) - note in this video, ignore_missing=2 should be ignore_missing=1
- Write-up (docx)

Articles and book chapters

Central limit theorem
- Somoray, K. (2023). The central limit theorem (Ch 6.4). A contemporary approach to research and statistics in psychology. James Cook University. https://doi.org/10.25120/6xg7-djxk
Data screening
- Kim, Y., Dykema, J., Stevenson, J., Black, P., & Moberg, D. P. (2019). Straightlining: Overview of measurement, comparison of indicators, and effects in mail–web mixed-mode surveys. Social Science Computer Review, 37(2), 214–233. https://doi.org/10.1177/0894439316674459
Data type
- Leung, S. O. (2011). A comparison of psychometric properties and normality in 4-, 5-, 6-, and 11-point Likert scales. Journal of Social Service Research, 37(4), 412–421. https://doi.org/10.1080/01488376.2011.580697
- Wu, H., & Leung, S. O. (2017). Can Likert scales be treated as interval scales?—A simulation study. Journal of Social Service Research, 43(4), 527–532. https://doi.org/10.1080/01488376.2017.1329775
Dealing with outliers
- Guidelines for removing and handling outliers in data (Jim Frost)
Descriptive statistics, graphing, and data manipulation
- Navarro, D., & Foxcroft, D. (2025). Chapter 4: Descriptive statistics. In Learning statistics with jamovi: A tutorial for beginners in statistical analysis. Open Book Publishers. https://doi.org/10.11647/OBP.0333
- Navarro, D., & Foxcroft, D. (2025). Chapter 5: Drawing graphs. In Learning statistics with jamovi: A tutorial for beginners in statistical analysis. Open Book Publishers. https://doi.org/10.11647/OBP.0333
- Navarro, D., & Foxcroft, D. (2025). Chapter 6: Pragmatic matters. In Learning statistics with jamovi: A tutorial for beginners in statistical analysis. Open Book Publishers. https://doi.org/10.11647/OBP.0333
Hypothesis testing
- Kerr, N. L. (1998). HARKing: Hypothesizing after the results are known. Personality and Social Psychology Review, 2(3), 196–217. https://doi.org/10.1136/bmj.k5094
- Perezgonzalez, J. D. (2015). Fisher, Neyman-Pearson or NHST? A tutorial for teaching data testing. Frontiers in Psychology, 6, 223. https://doi.org/10.3389/fpsyg.2015.00223
Missing data
- Dong, Y., & Peng, C. Y. J. (2013). Principled missing data methods for researchers. SpringerPlus, 2, 1–17. https://doi.org/10.1186%2F2193-1801-2-222
- Kang, H. (2013). The prevention and handling of the missing data. Korean Journal of Anesthesiology, 64(5), 402–406. https://doi.org/10.4097/kjae.2013.64.5.402
Power and effect size
- Cohen, J. (1992). A power primer. Psychological Bulletin, 112, 155–159. https://doi.org/10.1037/14805-018
- Sawilowsky, S. S. (2009). New effect size rules of thumb. Journal of Modern Applied Statistical Methods, 8, 597–599. https://doi.org/10.22237/jmasm/1257035100

Videos

Missing data
- Little’s Missing Completely at Random (MCAR) Test - SPSS (YouTube; 05:15 mins)
- Replace Missing Values – Expectation-Maximization – SPSS (part 1) (YouTube; 03:57 mins)
- Replace Missing Values – Expectation-Maximization – SPSS (part 2) (YouTube; 05:02 mins)
Power
- G*Power sample size calculations: 5 min demo (YouTube; 04:41 mins)

Webpages

Central limit theory
- Central limit theorem (Michael Freeman, 2016)
- Centre limit theorem (Phillip Plewa, 2024)
- Probability distributions - Central limit theorem (Seeing Theory)
Data type
- Transforming and recoding variables in jamovi (blog.jamovi.org)
Falsifiability (Wikipedia)
Hypothesis (Wikiversity)
Internal consistency and composite scores
- Reliability analysis and composite scores with jamovi (hanover.edu)
Missing data
- MAR and MCAR missing data (theanalysisfactor.com)
- Missing data (Wikiversity)
Power and sample size
- Calculators
  - Daniel Soper (danielsoper.com)
  - G*Power (psychologie.hhu.de)
  - Sample size determination (Wikipedia)

Workshop 2 quiz - Research design 2