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TERM
Static Panel, aka Longitudinal Panel
A longitudinal panel of the same households over time.
Definition
Static panels track the same respondents, enabling repeat and loyalty analysis.
How to Calculate
Follow households across periods without replacements.
Why it Matters
Shows true behavior changes.
Key Advantages
Reduces noise from churn.
Example
Panel of 50,000 households for two years.
Use it to
Track repeat purchases from the same households over time to separate buyer flow from distribution changes. Use longitudinal reads to understand retention, switching, and purchase cycles.
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