"Measure a tint loyalty program over the right return-visit period"
"Source","https://bluefinchadvisors.com/blog/measure-a-tint-loyalty-program-over-the-right-return-visit-period"
"Basis","This planning scenario uses the values entered. It is not an industry benchmark or a quote."

"Inputs","Value","Unit"
"Enrolled customers in the selected cohort","60","number"
"Enrolled customers with a full observation window","40","number"
"Fully observed customers with a qualifying return","8","number"
"Comparison customers with the full window","40","number"
"Comparison customers with a qualifying return","6","number"

"Results","Value","Unit"
"Fully observed member return share","20","percent"
"Comparison return share","15","percent"
"Observed return-share difference","5.000000000000002","percentage-points"

"Calculation detail","Value","Unit"
"Enrolled members pending a full window","20","number"
"Fully observed members without a qualifying return","32","number"
"Comparison customers without a qualifying return","34","number"

"Assumptions"
"Set the qualifying completed-job rule before counting."
"Both groups have the same full observation length and comparable definitions."
"Recent enrollments remain pending instead of being counted as failed returns."
"An observed difference alone does not prove program causation or profit."

"Result notes"
"No messages, rewards or CRM changes are performed."
"The entered window is a reporting choice, not a product replacement schedule."
"This calculation omits reward costs, overhead and any causal profit claim."

"Sources"
"NIST: Sample proportions and separate statistical comparisons","https://www.itl.nist.gov/div898/handbook/prc/section3/prc33.htm"
"HubSpot: Task owners, due dates and associated records","https://knowledge.hubspot.com/tasks/create-tasks"
"BlueFinch: Optional paid loyalty service and activation requirements","https://bluefinchadvisors.com/toolbox/customer-loyalty"