Critical Z-values Calculator

<-- Enter α
For t-distribution critical values, use our t-value distribution calculator
For F-distribution critical values, use our F-value distribution calculator
For Χ2-distribution critical values, use our chi-square distribution calculator

How does the Critical Z-values Calculator work?

Given a probability from a normal distribution, this will generate the z-score critical value. Uses the NORMSINV Excel function.
This calculator has 1 input.

What 1 formula is used for the Critical Z-values Calculator?

  1. Z = (x - μ)/σ/√n

For more math formulas, check out our Formula Dossier

What 3 concepts are covered in the Critical Z-values Calculator?

Number of square units covering the shape
critical value
a point on the distribution of the test statistic under the null hypothesis that defines a set of values that call for rejecting the null hypothesis.
critical z-values

Example calculations for the Critical Z-values Calculator

  1. a=0.03
  2. alpha=0.05
  3. NORMSINV(0.95)

Critical Z-values Calculator Video