Build a Clean Cohort Filter

trail Pricing launch The product team asks: "Of Pro users who signed up after May 1, what percent activated within seven days?" The denominator is the product decision. If the cohort is wrong, the activation rate is theater. Filtering framework Membership first, metrics second Use WHERE to define who qualifies. Use joins and aggregates only after that denominator is stable. React Join events immediately and count activation rows. The numerator and denominator refer to the same population. Define the denominator before calculating a rate. 01 Cohort 02 Events 03 Rate Cohort membership

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