Case studies
Ten realistic case studies — exam scores, a café survey, a blood-pressure programme, sales and advertising, an A/B test, a final-year thesis questionnaire and more — each with a synthetic dataset you can open in StatLab with one click, a step-by-step analysis and an APA-style write-up.
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Exam scores under three teaching methods
One-way ANOVA · Do mean exam scores differ between lecture, flipped-classroom and blended teaching?
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Customer satisfaction survey (Likert scale)
Reliability · Do the eight items form a reliable satisfaction scale, and how satisfied are customers overall?
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Blood pressure before and after a lifestyle programme
Paired t test · Wilcoxon · Did systolic blood pressure fall after the programme?
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Retail sales and advertising spend
Correlation · simple regression · How strongly are sales related to advertising, and how much extra sales does each RM 1,000 of advertising bring?
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Gender and product preference
Chi-square · Is product preference associated with gender?
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Drivers of employee engagement
Multiple regression · Which factors predict employee engagement when considered together?
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Final-year thesis: social media and academic performance
Student workflow · Is social-media addiction related to CGPA, and does study engagement matter more?
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Quality control on three bottling lines
Explore · Welch ANOVA · Do the lines fill to the same average volume, and is any line less consistent?
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A/B test of a checkout page
Chi-square 2×2 · Does the new page convert more visitors?
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Exam stress in first-year and final-year students
Mann-Whitney U · Do final-year students report more exam stress than first-year students?
All example datasets are synthetic (seeded random data for teaching). New to statistics? Start with Choosing a test.