Invnorm Calculator

InvNorm Calculator

Calculate the inverse normal distribution (z-score) for a given cumulative probability.

Cumulative Probability (p)

Please enter a probability between 0 and 1.

Mean (μ)

Standard Deviation (σ)

Standard deviation must be greater than 0.

Result

Inverse Normal (x):

Formula: Using the approximation of the inverse normal distribution (Raffin, 2001).

Steps: