1.I We can use the probability to answer questions about the variable X. 2. A takes numerical values that describe the outcome of some chance process. 3. The sum of the probabilities is 4. Multiply each possible value by its probability, then add all the products to get the 5. The mean of a random variable is often referred to as its 6. of a random variable X is a measure of how much the values of the variable typically vary from the mean ux. 7. A takes all the values in an interval of numbers