midStatistics
What is skewness?
Updated May 17, 2026
Short answer
Measure of asymmetry in data distribution.
Deep explanation
Positive skew means right tail; negative skew means left tail.
Real-world example
Income distributions are usually positively skewed.
Common mistakes
- Assuming all distributions are symmetric.
Follow-up questions
- What is impact of skewness?
- How to reduce skewness?