# P-value Calculator

> Calculate P-values from Z-scores (Normal Distribution).

Page: https://askcalculators.com/calculator/p-value-calculator/
Definition: https://askcalculators.com/calculator/p-value-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/p-value-calculator/schema.json
Version: 7.0.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/calculator/p-value-calculator/?zScore=1.96

## Inputs
- zScore: Z-score; type=number; optional; default=1.96

## Outputs
- result: Result; format=text; primary

## Formula
For the selected normal z test, the p-value is calculated from the standard-normal cumulative distribution and the chosen tail.

Implements a normal z test only, not a general p-value calculator for every statistical model.

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.

Notice: Implements a normal z test only, not a general p-value calculator for every statistical model.