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Aggregate respondent willingness to pay

POST 
/api/v1/aggregated/wtp

Groups HB_WTP rows by attribute and level, then returns mean willingness to pay, sample standard deviation, and respondent count.

Interpretation. mean_wtp summarizes the modeled price-equivalent value of a level across the submitted respondent estimates.

Do not infer. The mean is not a recommended price. Check coefficient direction, units, outliers, and respondent-level variation before using it in a decision.

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