# Significance Level Calculator

The probability of rejecting the null hypothesis in a statistical test when the hypothesis is true is called as the significance level. The corresponding significance level of confidence level 95% is 0.05. Use this simple online significance level calculator to do significance level for confidence interval calculation within the fractions of seconds. This two tailed and one tailed significance test calculator is a renown tool for fastest computations.

## Two tailed and One Tailed Significance Test Calculator

The probability of rejecting the null hypothesis in a statistical test when the hypothesis is true is called as the significance level. The corresponding significance level of confidence level 95% is 0.05. Use this simple online significance level calculator to do significance level for confidence interval calculation within the fractions of seconds. This two tailed and one tailed significance test calculator is a renown tool for fastest computations.

Code to add this calci to your website

#### Formula:

For One Tailed
l = 100 - c
For Two Tailed
l = (100 - c) / 2
**Where,**
l = Significance Level
c = Confidence Level
### Example:

Calculate the significance level in one tailed test for the confidence interval of 90 %.

#### Solution:

l = 100 - 90

= 10 %.