Can we determine if two random variables are independent if I know their expected values and the variances?

kaltEvallwsr

kaltEvallwsr

Answered question

2022-11-03

Can we determine if two random variables are independent if I know their expected values and the variances?

Answer & Explanation

Savanna Smith

Savanna Smith

Beginner2022-11-04Added 17 answers

Clearly the expectation and variance of a random variable only tells you some things about that random variable, and not about how it may depend on another random variable.
Having two sets of expectations and variances can not indicate anything about how the respective variables depend on each other.

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