Table 30. Significance Tests of Average Advisory Program Returns , Corn, Soybeans and 50/50 Advisory Revenue, 1995 - 2004 Crop Years, Commercial Storage Costs
                             
Commodity/ Difference Between Average Advisory Program and Benchmark   Average Standard Two-tail
Benchmark 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Difference Error t-statistic p-value
--- per bushel (harvest equivalent)--- --- per bushel (harvest equivalent)---
Corn
Market Benchmarks:
24-Month Average 14 -2 -1 -8 -3 4 -2 4 1 11 2 2 0.88 0.40
20-Month Average -4 -4 4 5 5 11 5 6 2 15 Text Box: *
5
2 2.50 0.03
Farmer Benchmarks:
USDA Prices -3 12 9 20 9 18 4 4 3 12 Text Box: **
9
2 3.99 0.00
Market Prices -29 21 15 25 13 19 8 6 -1 35 11 6 2.06 0.07
--- per bushel (harvest equivalent)--- --- per bushel (harvest equivalent)---
Soybeans
Market Benchmarks:
24-Month Average 33 19 8 -4 18 2 11 26 27 17 Text Box: **
16
4 4.28 0.00
20-Month Average 20 6 16 18 37 6 23 14 -13 12 Text Box: **
14
4 3.36 0.01
Farmer Benchmarks:
USDA Prices 1 10 21 64 28 15 -10 -17 -105 38 4 14 0.31 0.76
Market Prices -17 14 30 77 31 21 -4 -16 -148 58 5 19 0.24 0.82
---$ per acre (harvest equivalent)--- ---$ per acre (harvest equivalent)---
50/50 Revenue
Market Benchmarks:
24-Month Average 15 2 1 -6 2 4 1 11 6 15 Text Box: *
5
2 2.37 0.04
20-Month Average 2 -2 7 8 13 11 9 9 -1 17 Text Box: **
7
2 3.90 0.00
Farmer Benchmarks:
USDA Prices -1 11 11 30 14 18 1 -1 -17 22 9 4 2.01 0.08
Market Prices -21 19 18 38 18 21 5 1 -29 48 12 7 1.58 0.15
                             
Notes: Two stars indicates significance at the one percent level and one star indicates significance at the five percent level.