Does zero variance imply constant random variable?
114179
If $Var(X)=0$ then is $X$ a constant?
97148
Does bounded variation imply boundedness
75390
How does one prove that if function's partial derivative respect to every variable is zero, function is constant?
34278
A basic question on expectation of distribution composed random variables
6190
Maximum/minimum of two random variables is a random variable
157402
Hidden variables in probability
81767
Reverse Markov Inequality for non-negative unbounded random variables
119529
Is joint normality a necessary condition for the sum of normal random variables to be normal?
139877
Square of a uniform random variable
19471
Expectation of an absolute value of a normal random variate
57451
Independent variable = Random variable?
82279
Prove that it is a random variable iff it is constant on each partition
119947
Can a non-zero vector have zero image under every linear functional?
51960
Would a Bayesian admit that there is one fixed parameter value?
154986
Formal definition of a random variable
23615
Why does zero derivative imply a function is locally constant?
123844
conditional expectation: an implication