This calculator finds the

**z critical value**associated with a given 1-tailed significance level.Simply fill in the significance level below, then click the “Calculate” button.

z critical value (one-tailed): **1.64485**

Statistics Made Easy

This calculator finds the **z critical value** associated with a given 1-tailed significance level.

Simply fill in the significance level below, then click the “Calculate” button.

z critical value (one-tailed): **1.64485**