Table Table 2 Growth that compounds 6 September 2026

How is cohort analysis different from a snapshot or experiment?

Method or view	Comparison clock	Primary question	Boundary
Calendar snapshot	Calendar date	What is the current state?	Does not align units by entry age
Cohort analysis	Time since entry	How does an age-relative outcome develop?	Descriptive unless a causal design is added
Activation rate	Fixed window after entry	Which units reached a declared first-value event?	Does not measure later survival alone
Experiment	Assignment and follow-up window	What changed relative to a counterfactual?	Needs treatment, control, exposure, and estimand

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What is cohort analysis? A stable entry event before a retention curve

Cohort analysis aligns units by a declared entry event and age. Define the cohort, outcome, maturity rule, and denominator before reading the curve.

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Isoglu, S. (2026). How is cohort analysis different from a snapshot or experiment? [Table]. isoglu.com. https://isoglu.com/insights/exhibits/isoglu-2026-what-is-cohort-analysis-fig03/

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@misc{isoglu-2026-what-is-cohort-analysis-fig03,
  author = {Isoglu, Sinan},
  title = {{How is cohort analysis different from a snapshot or experiment?}},
  year = {2026},
  howpublished = {Table 2, isoglu.com},
  url = {https://isoglu.com/insights/exhibits/isoglu-2026-what-is-cohort-analysis-fig03/},
  note = {From the essay {What is cohort analysis? A stable entry event before a retention curve}}
}

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