SYNTHETIC CONTROL + CAUSAL IMPACT
Synthetic Control Causal Impact Lab
Estimate launch, campaign or pricing impact with synthetic-control counterfactual weights, actual-vs-counterfactual SVG, effect timeline CSV, weights CSV, Markdown notes and JSON receipt.
Reviewed 2026-06-29
DataPre-period fitControl weightsCounterfactualLift estimateCSV exportsJSON receipt
FORMULA CONTRACT
A better impact estimate needs a counterfactual.
The lab fits w_i >= 0 and sum(w)=1 on pre-period rows, then compares post-period actual against synthetic_t = sum(control_i,t * w_i). It reports pre-fit RMSE, cumulative effect, percent lift and standardized effect.