A. Directions: Given the table below; calculate the mean, variance and standard deviation. D 1 2 P(D) 0.41 ? 0.41 1. Р(2): 3. Variance: 2. Mean: 4. Standard deviation: B. Directions: Find the variance and standard deviation of the following: 1. A probability distribution of X, which can take only the values 1, 2, and 3, given that P(1) =, P(2) = , and P(3) = 2 2. 5' 5 Variance: Standard Deviation:

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