are variances always correlated? can a single random variable have a different variance? can you have two different randomly determined variables? can two random variables be perfectly correlated, but not totally related? can you have two variables, but they are perfectly correlated, but have different variances? can the two variables be perfectly correlated and have different variances? can one have two variables with totally correlated but different variances can a single variable have a variance that is perfectly correlated what is the difference between the correlated and perfectly correlated variables when does probability have to be the same for two variables can you have two perfectly correlated random variables a random variable is always perfectly correlated, but with the greatest variance can two randomly chosen variables have different correlated mean what is the difference between a correlated random variable and an correlated standard variable? can we use two variables and have them correlated how many variables can be easily correlated with the mean can two random variables be perfectly correlated when two variables are perfectly correlated, but with different variances, they are can you have two identically correlated data but different variances can you have a perfectly correlated variable and have different variances as a percentage of mean?