Tag: chi-square
Concepts
Interview Questions
- Variance interval from 25 observations
- Variance interval from a reported standard deviation
- Confidence interval for a standard deviation
- 90% chi-square interval for a variance
- Confidence interval for a variance using chi-square
- A 24,600 vs 25,400 split on 50,000 users, real or noise?
- When a 5,050 vs 4,950 split is perfectly fine
- SRM on an uneven 90/10 holdback split
- A 0.5% imbalance that still fails the SRM test
- Is your 50/50 split actually 50/50? A sample-ratio check