Darwinch / Sample experimentOpen your workspace
Known synthetic dataset · 4,000 assignments · 460 conversions. These are illustrative counts, not live customer results.
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Make the next step clearer

A concrete outcome could make the next step feel more useful.

Running

Still collecting evidence

Rates are preliminary. Wait for the planned stopping rule before deciding.

Assigned browsers4,000
Successful exposures4,000
Converted browsers460

The primary comparison

Fixed 50 / 50 split
VersionAssignedExposedConvertedConversion rate95% interval
Control2,0002,00020010.0%8.8%–11.4%
Variation2,0002,00026013.0%11.6%–14.5%

Control

Assigned
2,000
Exposed
2,000
Converted
200
Conversion rate
10.0%
95% interval
8.8%–11.4%

Variation

Assigned
2,000
Exposed
2,000
Converted
260
Conversion rate
13.0%
95% interval
11.6%–14.5%

Primary rate: converted browsers / assigned browsers. Failed delivery remains in the denominator. Outcomes are browser-reported clicks.

Variation minus control

3.00 percentage points

95% uncertainty interval: 1.02 to 4.98 points

Before you decide

  • The planned enrollment and conversion window are still open.
  • One primary goal. No automatic winner promotion.
One hypothesis. One primary goal. A fair comparison.Try the synthetic website