glamrockqueen7

2021-01-13

Explain the rules 3 and 4 in sum of several random variables.

2abehn

Skilled2021-01-14Added 88 answers

Sums of Random Variables:

Rule 3:

The rule 3 represents the mean values of the two random variables X and Ycan be added.

Rule 2:

The rule 4 represents the standard deviation value of the random variable X+Y of the two random variables X and Y, the variance of the variables XYand Ycan be added if the variables are independent.