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Growth funnels, loops & lifecycle · Working

Viral coefficient

Also called: K-factor, viral factor

ELI5

Average number of additional users generated by each existing user under a stated method.

Used in conversation

“The growth review needs to show the trade-off behind viral coefficient.”

Pitch context

You will see “Viral coefficient” in brand decks, campaign plans, research reports and performance reviews when the discussion reaches growth funnels, loops & lifecycle.

Why it matters: It helps a reader interpret growth funnels, loops & lifecycle without confusing the measure, decision, role or evidence being discussed.

When the words have to travel

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Sources & evidence · 10

Supporting source families. This entry is an editorial synthesis rather than a quotation from one canonical glossary.