Statistics and probability
Variance
The average squared deviation from the mean under the selected population or sample convention.
Common notation σ²=Σ(xᵢ−μ)²/N
In one sentence
What does Variance mean?
The average squared deviation from the mean under the selected population or sample convention.
How it is written
σ²=Σ(xᵢ−μ)²/N
A compact example
For 1, 2 and 3, population variance is 2/3.
Clear answers
Questions about Variance
What does Variance mean in mathematics?
The average squared deviation from the mean under the selected population or sample convention.
How is Variance written?
A common notation is σ²=Σ(xᵢ−μ)²/N.
What is an example of Variance?
For 1, 2 and 3, population variance is 2/3.