Use the following frequency distribution for Questions 10 through 12.

Return, R	Frequency
-10% up to 0%	4
0% up to 10%	2
10% up to 20%	5
20% up to 30%	6
30% up to 40%	9
40% up to 50%	4

10. The number of intervals in this frequency table is: A. 1. B. 5. C. 6.

11. The sample size is: A. 1. B. 5. C. 30. D. 27. 12. The relative frequency of the fourth interval is: A. 10.0%. B. 20.0%. C. 33.3% D. 34.6%