Assertion: random variable | /r/HasProperty | \displaystyle \mathbb r
Facets:
Source sentences:
text: If X {\displaystyle X} is a vector-valued random variable, with values in R n , {\displaystyle \mathbb {R} ^{n},} and thought of as a column vector, then a natural generalization of variance is E ⁡ [ ( X − μ )