Question: In problem, determine the probability of getting a value within one standard deviation of the mean. That is, determine the probability of getting a value between μ-σ and μ+ σ.
Problem: If the possible values for x are 1, 2, 3, 4, 5 with probabilities .2, .1, .1, .5, .1, respectively, what are the population mean, variance and standard deviation?