Confidence Interval Calculator for Mean

Enter sample mean, standard deviation, sample size and confidence level.

Examples

What does 95% confidence mean?

95% of such intervals would contain the true mean.

Calculate permutations P(n,r) — arrangements where order matters.

Calculate combinations C(n,r) — selections where order does not matter.

Compute mean, median, mode, standard deviation, variance, min, max and more.

Convert a value to a standard score (z) and approximate percentile.

Calculate probability percentage and odds from favorable and total outcomes.