1. True or false: If two data sets have the same mean, median, and mode, then the two data sets are identical.

2. True or false: The variance is the square root of the standard deviation.

3. True or false: The Empirical Rule applies for any data set.

4. A(n)__________is an extremely large or extremely small data value relative to the rest of the data set.

5. The mean can be viewed as the __________ point of the data.

6. The measure of center that is sensitive to the presence of extreme values is the __________.

7. What do we call summary descriptive measures that are not sensitive to the presence of outliers?

8. Which of the mean, median, and mode may be used for categorical data?

9. For any data set, what is the average of the deviations?

10. What do we use to estimate the mean for each class in a frequency distribution?

11. Calculating a Grade Point Average. At a certain college in Texas, student grade point averages are calculated as follows. For each credit hour, an A is worth 4.0 quality points, an A− is worth 3.7 quality points, a B+ is worth 3.3 quality points, a B is worth 3.0, a B− is worth 2.7, a C+ is worth 2.3, and so on. To find the grade point average, the number of credits for each course is multiplied by the quality points earned for that course; the results are added together; and the sum is divided by the number of credits. This semester, Angelita's grades are as follows. She got an A in her four-credit honors biology course, an A− in her three-credit calculus course, a B+ in her three-credit English course, a B− in her three-credit anthropology course, and a C+ in her two-credit physical education course. Calculate Angelita's grade point average for this semester.

12. A sample of 30 Americans yielded a sample mean consumption of carbonated beverages this year of 60 gallons, with a sample standard deviation of 40 gallons. Find the -scores for the following amounts of carbonated beverage consumption.

13. Refer to the information in Exercise 12. Assume the distribution is bell-shaped. (Hint: Use your knowledge about the Empirical Rule to give a range for the proportions in parts (b) and (d)).

14. Find the following quartiles for SAT 1 Math score:

15. Find the interquartile range of SAT 1 Math score.

16. Find the five-number summary for SAT 1 Math score.

17. Use robust methods to investigate the presence of outliers.

18. Construct a boxplot for SAT 1 Math score.