Evaluate Cohort Posting Patterns Using Metrics and Tests

Q: Evaluate Cohort Posting Patterns Using Metrics and Tests

This question evaluates a data scientist's skills in cohort analysis, time-dependent behavioral metrics, and rigorous statistical comparison under challenges such as right-censoring and heavy-tailed posting distributions.

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Question

Assessing Whether Cohorts Have the Same or Different Posting Patterns

Context

You have multiple creator cohorts (e.g., by signup month or first-post week). For each cohort, you have posting activity over time. Your goal is to determine whether posting behavior is materially different across cohorts, accounting for time since cohort start and data issues like right-censoring and heavy-tailed distributions.

Task

Propose how you would evaluate whether posting patterns are the same or different among cohorts.

Address:

Metrics to compute (per cohort and over cohort age).
Visualizations to reveal similarities/differences.
Statistical tests/models to assess significance and effect size.
Thresholds/criteria to conclude "same" vs. "different."

Evaluate Cohort Posting Patterns Using Metrics and Tests

Assessing Whether Cohorts Have the Same or Different Posting Patterns

Context

Task

Solution

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