What Cashiers Do About this section Cashiers process returns and exchanges of merchandise. Cashiers process payments from customers purchasing goods and services.
Statistics and Probability Dictionary. Select a term from the dropdown text box. The online statistics glossary will display a definition, plus links to other related web pages. Select term: Conditional Probability. The probability that event A occurs, given that event B has occurred, is called a conditional probability. The conditional probability of A, given B, is denoted by the symbol P(A|B).
Stats: Conditional Probability. Recall that the probability of an event occurring given that another event has already occurred is called a conditional probability. The probability that event B occurs, given that event A has already occurred is. P(B|A) = P(A and B) / P(A) This formula comes from the general multiplication principle and a little bit of algebra. Since we are given that event A has occurred, we have a reduced sample space.