Invnorm Calculator
Calculate the inverse normal distribution (z-score) given a cumulative probability, mean, and standard deviation.
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How to use this tool?
- 1 Enter the requested data in the fields above carefully.
- 2 Click the calculate button to process the information instantly.
- 3 Analyze the detailed result and the formula explanation presented below.
- 4 You can print, share, or even embed the calculator on your own site for free.
Unlike traditional static calculators, our tools adapt to specific user needs. They include detailed explanations of the formulas used, ensuring transparency in results. Furthermore, our design is focused on user experience, eliminating distractions and focusing on what really matters: your data and conclusions.
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Frequently Asked Questions
InvNorm computes the inverse of the normal cumulative distribution function, returning the value at which the probability of a random variable with a given mean and standard deviation is less than or equal to a specified cumulative probability.
You need to provide the cumulative probability (between 0 and 1), the mean (μ), and the standard deviation (σ).
The inverse normal is undefined for probabilities exactly 0 or 1. The calculator will show an error if you enter values outside the open interval (0,1).
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