The F-Test for Equal Variances Calculator is a statistical tool used to compare the variances of two populations in order to determine if they are equal or not. It uses the F-test statistic to calculate the probability that the two variances are from the same population. This test is often used to determine whether two samples have been drawn from the same population or not. It can also be used to determine if two samples have different variances or not.
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An F-test is used to test whether two population variances are equal..
To perform an F-test for two samples, simply enter a list of values for each sample in the boxes below, then click the “Calculate” button:
Sample 1:
Sample 2:
F-Value: 1.77011
P-Value: 0.35774
function calc() {
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var y = document.getElementById(‘y’).value.split(‘,’).map(Number);
var var1 = Math.pow(math.std(x), 2)
var var2 = Math.pow(math.std(y), 2)
var n1 = x.length-1;
var n2 = y.length-1;
var f = Math.max(var1,var2) / Math.min(var1,var2);
var p = (1-jStat.centralF.cdf(f, Math.max(n1,n2), Math.min(n1,n2)))*2
document.getElementById(‘f’).innerHTML = f.toFixed(5);
document.getElementById(‘p’).innerHTML = p.toFixed(5);
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