l Sample meanl Q1 at (n+1)/4l Q2 at (n+1)/2 (the median position)l Q3 at 3(n+1)/4l Interquartile range = Q3 Q1l Sample variance l Sample standard deviation l Coefficient of Variation l Z Score l Population mean l Population variance l Population standard deviation l Chebyshev Rule: at least (1 - 1/k2) x 100% of the values will fall within kl P(A or B) = P(A) + P(B) - P(A and B)ll Two events are independent if and only if: ll (If A and B