Below is a probability distribution of X, games played to finish the World Series. 4 .20
5 .20
6 .22
7 .38
Use your calculator to find the standard deviation of the random variable X.

An unknown number x is at most 10. which graph best represents all the values of x? number line graph with closed circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the left. number line graph with closed circle on 10 and shading to the left.