Statistics

Bonferroni Correction Calculator

Adjust the significance level for multiple comparisons.

Calculated Output

Adjusted alpha 0.005

Formula: adjusted alpha = alpha / number of tests

Step-by-Step Breakdown

1. Values used:

2. Significance level = 0.05

3. Number of tests = 10

5. Adjusted alpha = Significance level / Number of tests = 0.05 / 10 = 0.005

Did this calculator solve your problem today?

The math behind it

adjusted alpha = alpha / number of tests. Each test must clear this stricter threshold.

alpha 0.05 over 10 tests gives 0.005.

Why correct at all?

Many tests inflate the chance of at least one false positive.