US pizza restaurant spendingUS candle market retail sales
American candle sales and American pizza-restaurant spending, both climbing. The candle is on the table. The pizza is, statistically, also on the table. Two products of the same evening, on the same eighteen-year upward path.
US candle market revenue grew steadily across this window thanks to the home-fragrance and self-care category expansion. US pizza-restaurant spending grew from about 30 to over 50 billion dollars in the same window as delivery apps, fast-casual chains, and inflation lifted unit prices. Two completely unrelated category-growth stories sharing a window because the same eighteen years rewarded both a small home-fragrance staple and a particular restaurant category. Different aisles, same dinner.
The home meal got more atmospheric. The candle and the pizza found each other.
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Want to learn more about why correlations like “US pizza restaurant spending” vs “US candle market retail sales” don't prove causation? Read our guide to statistical thinking.