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A/B Test Statistical Significance Calculator

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Evaluate conversion rates between Control and Variant groups to determine statistical significance, p-value, and confidence.

Hypothesis Test (Two-Proportion Z-Test)

Determine whether an A/B test variation achieved statistically significant conversion lift over baseline control using a two-tailed z-test.

Control (A)
Variation (B)
Statistical Significance 99.7% Significant
Relative Conversion Lift +28.0%
P-Value 0.0028
Standards Verified
Deterministic & Accurate Output Tested against official specifications for reliable, reproducible calculation results.

How to Use This Tool

  1. Enter your input values in the designated fields above.
  2. Click Calculate or type to see instant real-time results.
  3. Use the Copy button to copy the output directly to your clipboard.

Supported Formats, Boundaries & Privacy

Inputs & Boundaries: Inputs must be valid numerical values within IEEE 754 double-precision floating-point bounds.

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