Population variance about the mean (Mean squared deviation from the mean (population form uses n))
jee-mainjee-advanced
Mean squared deviation from the mean (population form uses n)
What each symbol means
| Symbol | What it stands for |
|---|---|
| \bar{x} | Population mean (same batch) |
| \sigma^2 | Population variance |
When to use this
Definition with divisor n for entire finite population; JEE often states ‘variance of these n observations’ with n.