1. Find the following of data set:
74 82 65 79 88 62 63 73 86 86 53 74 89 70 87 66 80 84 83 82
a. mean
b. median
c. mode
d. standard deviation
e. the five number summary
2. Let's say that a sample was taken on the salaries of 1000 Americans, and that Bill Gates was included in that sample.
a. What would that do to the mean of that sample?
b. What would that do to the median of that sample?
3. Which are each of these - parameters or statistics?
a. A study done on all professional baseball players
b. A study done of the temperature of those entering the emergency room at a certain hospital.
c. The census done every ten years here in the U.S.
4. What is the z-value for 86 in the set in #1?
5. For the data set in #1, find the:
a. population standard deviation
b. sample standard deviation