Adding a constant value, c, to each term increases the mean, or expected value, by the constant. E(X+c) = E(X)+c. Rule 3. Multiplying a random variable by a constant value, c, multiplies the expected value or mean by that constant. Rule 4. The expected value or mean of the sum of two random variables is the sum of the means. This is also known as the additive law of expectation. E(X+Y) = E(X)+E(Y) Formulas and Rules for the Variance, Covariance and Standard Deviation of Random Variables.
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It is open in all counties except Logan, Mingo, McDowell and Wyoming. Approximately 330,000 deer hunters will be in West Virginiaâs woods during this season. Hunters should review the 2014 â 2015 Hunting and Trapping Regulations Summary for detailed instructions concerning bag limits and season dates.