Articles on one-sided

One-tailed vs Two-tailed Tests of Significance in A/B Testing

Two-tailed vs one-tailed test

The question of whether one should run A/B tests (a.k.a online controlled experiments) using one-tailed versus two-tailed tests of significance was something I didn’t even consider important, as I thought the answer (one-tailed) was so self-evident that no discussion was necessary. However, while preparing for my course on “Statistics in A/B Testing” for the ConversionXL […] Read more…

Posted in A/B testing, Conversion optimization, Statistical significance, Statistics | Also tagged , , , , , , ,