Table A1.  Number of Market Advisory Services above Alternative Market Benchmark Revenues, Wheat, 1995 -1998 Crop Years
             
Number Proportion
Number of of Services of Services
Market Benchmark/ Advisory above above Two-tail
Sample Period Services Benchmark Benchmark Z-statistic p-value  
24-Month Average
1995 24 16 0.67 23.25 1.80 *
1996 23 9 0.39 21.72 1.41
1997 20 4 0.20 17.50 1.99 ***
1998 21 1 0.05 10.50 2.00 ***
1995-1998 88 30 0.34 86.53 1.99 ***
20-Month Average
1995 24 14 0.58 23.14 1.17
1996 23 6 0.26 21.08 1.96 **
1997 20 5 0.25 18.00 1.95 **
1998 21 3 0.14 17.50 2.00 ***
1995-1998 88 28 0.32 86.43 2.00 ***
16-Month Average
1995 24 9 0.38 22.67 1.56
1996 23 6 0.26 21.08 1.96 **
1997 20 5 0.25 18.00 1.95 **
1998 21 7 0.33 19.50 1.75
1995-1998 88 27 0.31 86.37 2.00 ***
Note:  Three stars indicates significance at the 1% level, two stars indicates significance at the 5% level, and one star indicates significance at the 10% level.