Two-Proportion z-Test
Calculate Two-Proportion z-Test instantly with the exact formula and a worked example.
Two-Proportion z-Test
p₁
p₂
n₁
n₂
z
1.5831
More about: Two-Proportion z-Test
What it calculates
The “Two-Proportion z-Test” calculator computes z from 4 parameters: p₁, p₂, n₁, n₂.
A core calculation for studying, engineering tasks, and checking solutions.
Example calculation
With parameters p₁ = 0.5, p₂ = 0.45, n₁ = 500, n₂ = 500 the result is 1.58.
How to use
- Enter p₁, p₂, n₁ and n₂ — each field above is adjustable with a slider.
- z is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
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FAQ
How is Two-Proportion z-Test calculated?
The Two-Proportion z-Test calculator computes z from p₁, p₂, n₁, n₂. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Two-Proportion z-Test calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
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