Anon: Do you know how to calculate probabilities like P10, P20, P30...? I do not understand lot of this statistics stuff and desperately need help. Thanks
You can review your teacher's class notes, and the textbook, which should be self-explanatory.
You are probably stuck with notations, which are usually described at the beginning of the notes or textbook.
Probabilites are numbers between 0 and 1, and represent the likelihood of a certain event happening.
If Q represents the event of drawing a queen from a 52-card deck, then
P(Q)=4/52 since there are four queens in a 52 card deck, and we assume that the probability drawing any of the cards from a 52-card deck is equal.
Other than that, you can post a specific question that represents a typical problem with which you need help.