DataAdvanced 3 to 4 hours

Correlation vs. Causation Case Study

Tear apart a misleading business report that confuses correlation with causation.

The Scenario

A consulting firm presents a report to a retail CEO claiming: "Stores that play jazz music see 23% higher average basket size. Recommendation: play jazz in all stores." The data is real, but the conclusion is dangerously wrong.

The Brief

Write a critique of this report. Identify the logical flaw, propose at least 3 confounding variables, and design a study that could actually establish (or disprove) a causal relationship between music genre and basket size.

Deliverables

  • A clear explanation of why correlation ≠ causation, using this specific example
  • At least 3 plausible confounding variables that could explain the 23% difference
  • A proposed experimental design (randomised controlled trial) that could test the causal claim
  • One paragraph written as if you were advising the CEO directly

Submission Guidance

The CEO is not a statistician. Your critique must be rigorous but your advice must be plain English.

Submit Your Work

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