Gallery
Learn by doing: full case studies from research question to APA write-up, free practice datasets with codebooks (CSV, Excel and SPSS .sav), and short examples that show one analysis in a few steps. Every dataset is synthetic and free to use.
Case studies
🎓
Exam scores under three teaching methods
One-way ANOVA · education · beginner
Do mean exam scores differ between lecture, flipped-classroom and blended teaching?
☕
Customer satisfaction survey (Likert scale)
Reliability · business · beginner
Do the eight items form a reliable satisfaction scale, and how satisfied are customers overall?
🩺
Blood pressure before and after a lifestyle programme
Paired t test · Wilcoxon · health · beginner
Did systolic blood pressure fall after the programme?
📈
Retail sales and advertising spend
Correlation · simple regression · business · beginner
How strongly are sales related to advertising, and how much extra sales does each RM 1,000 of advertising bring?
🛍️
Gender and product preference
Chi-square · business · beginner
Is product preference associated with gender?
🏢
Drivers of employee engagement
Multiple regression · social science · advanced
Which factors predict employee engagement when considered together?
📝
Final-year thesis: social media and academic performance
Student workflow · social science · thesis
Is social-media addiction related to CGPA, and does study engagement matter more?
🏭
Quality control on three bottling lines
Explore · Welch ANOVA · engineering · advanced
Do the lines fill to the same average volume, and is any line less consistent?
🧪
A/B test of a checkout page
Chi-square 2×2 · business · beginner
Does the new page convert more visitors?
😰
Exam stress in first-year and final-year students
Mann-Whitney U · education · beginner
Do final-year students report more exam stress than first-year students?
Datasets
🎓
Exam scores under three teaching methods
One-way ANOVA · education · beginner
90 cases · 4 variables
☕
Customer satisfaction survey (Likert scale)
Reliability · business · beginner
220 cases · 10 variables
🩺
Blood pressure before and after a lifestyle programme
Paired t test · Wilcoxon · health · beginner
40 cases · 5 variables
📈
Retail sales and advertising spend
Correlation · simple regression · business · beginner
36 cases · 3 variables
🛍️
Gender and product preference
Chi-square · business · beginner
240 cases · 3 variables
🏢
Drivers of employee engagement
Multiple regression · social science · advanced
180 cases · 6 variables
📝
Final-year thesis: social media and academic performance
Student workflow · social science · thesis
160 cases · 14 variables
🏭
Quality control on three bottling lines
Explore · Welch ANOVA · engineering · advanced
150 cases · 3 variables
🧪
A/B test of a checkout page
Chi-square 2×2 · business · beginner
4000 cases · 3 variables
😰
Exam stress in first-year and final-year students
Mann-Whitney U · education · beginner
120 cases · 3 variables
📋
Survey practice dataset (150 respondents)
Any · social science · beginner
150 cases · 15 variables
⏱️
Clinic follow-up (time to relapse, 200 patients)
Any · health · advanced
200 cases · 6 variables
Examples (recipes)
⚡
Frequencies in 3 steps
Frequencies · social science · beginner
Recipe · practice survey
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Descriptive statistics in 3 steps
Descriptive statistics · social science · beginner
Recipe · practice survey
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Normality check (Shapiro-Wilk) in 4 steps
Normality check (Shapiro-Wilk) · social science · beginner
Recipe · practice survey
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Chi-square test in 4 steps
Chi-square test · social science · beginner
Recipe · practice survey
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One-sample t test in 3 steps
One-sample t test · social science · beginner
Recipe · practice survey
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Independent-samples t test in 5 steps
Independent-samples t test · social science · beginner
Recipe · practice survey
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Paired-samples t test in 3 steps
Paired-samples t test · social science · beginner
Recipe · practice survey
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One-way ANOVA with Tukey in 4 steps
One-way ANOVA · social science · beginner
Recipe · practice survey
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Pearson correlation in 3 steps
Pearson correlation · social science · beginner
Recipe · practice survey
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Multiple regression in 4 steps
Multiple regression · social science · thesis
Recipe · practice survey
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Cronbach's alpha in 3 steps
Cronbach's alpha · social science · thesis
Recipe · practice survey
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Mann-Whitney U in 4 steps
Mann-Whitney U · social science · beginner
Recipe · practice survey
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Wilcoxon signed-rank in 3 steps
Wilcoxon signed-rank · social science · beginner
Recipe · practice survey
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Kruskal-Wallis H in 3 steps
Kruskal-Wallis H · social science · beginner
Recipe · practice survey