statistics

I took Resource Economics 212 to fulfill my statistics requirement. We learned about common statistical notation. For example P(A) stands for probability of event A. P(A U B) stands for the probability that A OR B will happen, whereas P(A ∩ B) stands for the probability that BOTH A and B will happen. P(A I B) is the probability of event A, given that event B occurred. We also learned about standard deviation, which tells you, on average, how much the values as a whole are different from the average, i.e. determining whether they all right around the middle, or are there a lot on the lower end and a lot on the higher end that just average out to a middle value.  We learned how to calculate permutations and combinations as well. Permutations are the number of different ways a set of things from a group of things can be arranged, paying attention to their order, while combinations are also a set selected from a group but not paying attention to the order.