1. A bar chart is used to compare statistical results qualitative or quantitative aspects of a survey. 2. We want to study the relationship between the number of students in the cafeteria and the day of the week. The number of students in the cafeteria is a discrete quantitative variable. 3. If the z-score of a value is zero, then the value is equal to the mean. 4. The second quartile of a distribution is the median of the distribution. 5. An arrangement is a selection of r distinct objects chosen from among n objects in which the order is not important.

6. The number of permutations of the letters of the word TREE is 5!/2!

7. C( n, n) = n!

8. The probability of a certain event is 1. 9. The cardinality of a set is the number of elements in that set.

10. A discrete random variable is a function that assigns a value unique to each element of the result set of a experience while a continuous random variable is a variable random that can take on all values in a real interval given. 11. A binomial experience has, among other things, the characteristic that the the probability of success differs from trial to trial.