I disagree, I think it's statistically significant. I ran a quick z-test: p0 = 3... | Hacker News

Hacker Newsnew | past | comments | ask | show | jobs | submit

		solumos on Aug 5, 2020 \| parent \| context \| favorite \| on: Chat Bubble Blindness I disagree, I think it's statistically significant. I ran a quick z-test: p0 = 34 p1 = 45 n0 = 8004 n1 = 6622 z = -2.0924 p = 0.03662 So, the improvement is statistically significant at 95% confidence (p < 0.05) As far as practical significance, that's debatable . . .

qyph on Aug 5, 2020 [–]

A z test relies on the normal approximation, no? I don't think that is appropriate with proportions so close to 0.

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact