1. If the mean of a set of data is 23.00, and 12.60 has a z-score of –1.30, then the standard deviation must be:
A) 4.00 B) 32.00 C) 64.00 D) 8.00
2. What is the median of the following numbers?
3, 5, 8, 10, 14
A) 9 B) 5 C) 7 D) 8
4. Which of the following is the correct mean for the given data?
7, 8, 13, 9, 10, 11
A) 9.7 B) 9.67 C) 9 D) 10
5. The minimum of the set of numbers {–3, 17, -5, 11, 5} is
A) 20 B) 10 C) –3 D) 17
6. The maximum of the set of numbers {8, 18, -5, 11, 5} is
A) 15 B) -5 C) 18 D) 10.5
7. If the mean of a set of data is 23.00, and 30.50 has a z-score of 0.75, then the standard deviation must be:
A) 100.00 B) 5.00 C) 50.00 D) 10.00
8. If the five number summary for a set of data is 0, 3, 6, 7, and 16, then the mean of this set of data is
A) 6 B) there is insufficient information to calculate the mean C) 8 D) 5
10. Find the median for the following data.
6, 7, 4, 5, 3, 7, 4
A) 5 B) 3 C) 7 D) 4
11. All the values in a dataset are between 9 and 11, except for one value of 84. That value 84 is likely to be
A) the boxplot B) the mean C) the range D) an outlier
12. A student received the following grades: An A in Statistics (4 credits), a F in Physics II (5 credits), a B in Sociology (3 credits), a B in a Literature seminar (2 credits), and a D in Tennis (1 credit). Assuming A = 4 grade points, B = 3 grade points, C = 2 grade points, D = 1 grade point, and F = 0 grade points, the student's grade point average is:
A) 2.47 B) 2.24 C) 2.52 D) 2.40
13. Given that the variance for a data set is 1.20, what would be the standard deviation?
A) 0.60 B) 1.20 C) 1.10 D) 1.44
15. If a set of 25 numbers has standard deviation 9, then it's variance is
A) 45.00 B) 16.20 C) 81.00 D) 1.80
17. Determine the range for this data: 4, 7, 3, 16, 5, 22, and 8.
A) 14 B) 19 C) 3 D) 4
18. What is the range of the numbers –6, 2, –8, 3, 11
A) 19 B) –6 C) 2 D) 3
19. The range of the set of numbers {8, 17, 3, 10, 5} is
A) 10 B) 14 C) 17 D) 3
20. What is the term for a characteristic or measure obtained by using all the data values for a specific population?
A) mode B) statistic C) parameter D) variable