can you help me answer this and put some solution??

What is the Variance of the 3 points Probability distribution? Number of free throws, X Probability P(X) O 0.20 0.45 N 0.35 0.5559 0. 9555 0.5595 0.5955 The number of qualified voters 3 points living in household on a randomly selected subdivision block is described by the following probability distribution. What is the variance of the probability distribution? Number of qualified voter/s, x 1 2 3 Probability, P(X) 025 0:50 015 0.10