Question
would the variance of Z with respect to two independent variable, X and Y be subtracted to find the variance if Z = X-Y
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GPT 3.5
No, to find the variance of Z when Z = X - Y, you would need to use the properties of variance. Since X and Y are independent variables, the variance of their sum or difference is equal to the sum of their variances. Therefore, you would subtract the variances of X and Y to find the variance of Z.
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