Ice Cream Sales and Shark Attacks: The Correlation Trap

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Ever seen two charts that line up perfectly and thought, “Aha! They must be connected”? This graph shows ice cream sales and shark attacks rising and falling almost in sync. But one doesn’t cause the other—it’s just that both increase when it’s hot out.

Marketing Analysis

Marketers fall for this too—seeing correlations and assuming causation. It’s a classic mistake in data interpretation. Just because your email open rates spike after a redesign doesn’t mean the redesign caused it. Maybe it’s the timing, the subject line, or a seasonal trend.

Why It Works

  • Simple visuals make complex data instantly readable
  • Humor helps make the “data trap” lesson memorable
  • Shows how context creates clarity
  • Encourages skeptical, data-driven thinking

Creative Variations

Show other funny “correlations” to illustrate data pitfalls. Add context labels or draw attention to external factors (like weather).

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Classic 1950s print ad

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Funny style

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