Agricultural Exports. For Exercises 24–26, refer to Table 41. The table gives the value of agricultural exports (in billions of dollars) from the top 20 U.S. states in 2009.

Table 2.95: TABLE 41 Agricultural exports (in billions of dollars)
State Exports State Exports
California 12.5 Arkansas 2.6
Iowa 6.5 North Dakota 5.2
Texas 4.7 Ohio 2.7
Illinois 5.5 Florida 2.1
Nebraska 4.8 Wisconsin 2.2
Kansas 4.7 Missouri 2.7
Minnesota 4.3 Georgia 1.8
Washington 3.0 Pennsylvania 1.7
North Carolina 2.9 Michigan 1.6
Indiana 3.1 South Dakota 2.3
Table 2.95: Source: U.S. Department of Agriculture.

Question 2.303

agriexports

25. Construct a cumulative relative frequency distribution of agricultural exports. Start at $0 and use class widths of $2 billion.

  1. What proportion of states has exports of less than $4 billion?
  2. What proportion of states has exports of less than $6 billion?
  3. What proportion of states has exports of at least $6 billion?

2.3.25

Agricultural exports (in billions of dollars) Frequency Relative frequency Cumulative relative frequency
3 0.15 0.15
9 0.45 0.60
6 0.30 0.90
1 0.05 0.95
0 0 0.95
0 0 0.95
1 0.05 1.00
Total 20 1.00

(a) 0.60 (b) 0.90 (c) 0.10