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Figure 1From “What is cohort analysis? A stable entry event before a retention curve”

Two synthetic cohort-retention curves

Compare units at the same age after a stable entry event. Curve differences are descriptive until composition, maturity, and outcome rules are aligned.

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Figure 1Two synthetic cohort-retention curves

A line chart compares two synthetic age-relative retention curves. The new-logo cohort is 100 percent at day 0, 88 percent at day 30, 80 percent at day 60, and 75 percent at day 90. The expansion cohort is 100 percent, 95 percent, 92 percent, and 90 percent at the same ages. Values are illustrative and not a benchmark.New-logo cohortExpansion cohort0%20%40%60%80%100%90%75%Day 0Day 30Day 60Day 90Cohort ageSynthetic retention (%)

Source: Author's synthetic cohort model grounded in Ascarza, Iyengar and Schleicher (2016) and Steinhoff et al. (2025). Values show age-relative retention for two illustrative cohorts; they are not company data or a benchmark.

PNG4:3, 1600 × 1200, with the title, the source line and the attribution set in the image isoglu-2026-what-is-cohort-analysis-fig02.png

Source and evidence

Each line names a claim related to this exhibit, its source, and how it was checked.

  • B G02-OWN-C1 Cohort analysis groups units by a declared entry event and compares outcomes at the same relative ageAuthor framework grounded in AIS16-C1, AIS16-C2, and PV1R-C4
  • B G02-OWN-C2 A cohort comparison keeps grain, entry event, composition, age, outcome, denominator, and maturity visibleAuthor record design
  • B G02-OWN-C3 Retention at a declared age is units remaining at that age divided by eligible units at entryAuthor formula

Grades: A, verified against the printed page of the primary source · B, primary source, text layer only · C, authoritative secondary · D, reported.

From the essay

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APA 7

Isoglu, S. (2026). Two synthetic cohort-retention curves [Figure]. isoglu.com. https://isoglu.com/insights/exhibits/isoglu-2026-what-is-cohort-analysis-fig02/

BibTeX
@misc{isoglu-2026-what-is-cohort-analysis-fig02,
  author = {Isoglu, Sinan},
  title = {{Two synthetic cohort-retention curves}},
  year = {2026},
  howpublished = {Figure 1, isoglu.com},
  url = {https://isoglu.com/insights/exhibits/isoglu-2026-what-is-cohort-analysis-fig02/},
  note = {From the essay {What is cohort analysis? A stable entry event before a retention curve}}
}
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<figure>
  <a href="https://isoglu.com/insights/exhibits/isoglu-2026-what-is-cohort-analysis-fig02/">
    <img src="https://isoglu.com/social/isoglu-2026-what-is-cohort-analysis-fig02.png" alt="Figure 1: Two synthetic cohort-retention curves" width="3200" height="2400">
  </a>
  <figcaption>Figure 1: Two synthetic cohort-retention curves. Source: Author&#39;s synthetic cohort model grounded in Ascarza, Iyengar and Schleicher (2016) and Steinhoff et al. (2025). Values show age-relative retention for two illustrative cohorts; they are not company data or a benchmark. <a href="https://isoglu.com/insights/exhibits/isoglu-2026-what-is-cohort-analysis-fig02/">View exhibit</a>.</figcaption>
</figure>

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