Computer Rating System Prediction Results for College Football (NCAA IA)
2008 Second Half Totals
| System |
Pct. Correct |
Against Spread |
Absolute Error |
Bias |
Mean Square Error |
games |
suw |
sul |
atsw |
atsl |
| Born Power Index | 0.71345 | 0.51929 | 12.7167 | -1.2377 | 260.174 | 342 | 244 | 98 | 175 | 162 |
| Line (updated) | 0.71053 | | 12.7295 | -0.7792 | 260.590 | 342 | 243 | 99 | | |
| Computer Adjusted Line | 0.71053 | 0.52713 | 12.7222 | -0.8012 | 260.940 | 342 | 243 | 99 | 68 | 61 |
| Atomic Football | 0.73099 | 0.51335 | 12.7469 | -1.0207 | 261.664 | 342 | 250 | 92 | 173 | 164 |
| Stat Fox | 0.71345 | 0.57547 | 12.6229 | 0.1143 | 262.928 | 342 | 244 | 98 | 183 | 135 |
| NutShell Sports | 0.74854 | 0.52226 | 12.8088 | -1.1215 | 263.255 | 342 | 256 | 86 | 176 | 161 |
| Moore Power Ratings | 0.72807 | 0.52819 | 12.9262 | -1.4903 | 269.551 | 342 | 249 | 93 | 178 | 159 |
| CPA Rankings | 0.74561 | 0.56677 | 12.8293 | -0.5895 | 270.412 | 342 | 255 | 87 | 191 | 146 |
| Line (opening) | 0.69591 | 0.47292 | 12.9123 | -1.0088 | 270.659 | 342 | 238 | 104 | 131 | 146 |
| Dokter Entropy | 0.73099 | 0.51632 | 12.8318 | -0.2416 | 271.208 | 342 | 250 | 92 | 174 | 163 |
| System Median | 0.73977 | 0.50450 | 12.8014 | -1.0301 | 271.609 | 342 | 253 | 89 | 168 | 165 |
| System Average | 0.74561 | 0.50298 | 12.8384 | -1.0316 | 272.144 | 342 | 255 | 87 | 169 | 167 |
| Pigskin Index | 0.72271 | 0.47284 | 12.9645 | -1.2886 | 273.201 | 339 | 245 | 94 | 148 | 165 |
| Sagarin Predictive | 0.71930 | 0.49852 | 13.0343 | -1.5220 | 273.436 | 342 | 246 | 96 | 168 | 169 |
| Lee Burdorf | 0.70760 | 0.52096 | 13.0058 | -1.1304 | 275.189 | 342 | 242 | 100 | 174 | 160 |
| Covers.com | 0.71345 | 0.51045 | 12.9807 | -1.3268 | 277.506 | 342 | 244 | 98 | 171 | 164 |
| Laz Index | 0.73099 | 0.52381 | 12.9975 | -1.4367 | 279.048 | 342 | 250 | 92 | 176 | 160 |
| Catherwood Ratings | 0.70455 | 0.51701 | 13.0714 | -0.5325 | 279.343 | 308 | 217 | 91 | 152 | 142 |
| Edward Kambour | 0.71930 | 0.50742 | 13.1752 | -0.6575 | 279.715 | 342 | 246 | 96 | 171 | 166 |
| Hank Trexler | 0.72222 | 0.48039 | 12.9444 | -1.1433 | 279.888 | 342 | 247 | 95 | 147 | 159 |
| Harmon Forcast | 0.70674 | 0.46440 | 13.0587 | -1.0528 | 280.205 | 341 | 241 | 100 | 150 | 173 |
| Bihl System | 0.74561 | 0.51190 | 13.0658 | -0.8429 | 280.721 | 342 | 255 | 87 | 172 | 164 |
| Dave Congrove | 0.69298 | 0.51786 | 13.0498 | -1.3734 | 280.731 | 342 | 237 | 105 | 174 | 162 |
| Ashby AccuRatings | 0.70760 | 0.48438 | 13.0994 | -0.4091 | 282.343 | 342 | 242 | 100 | 155 | 165 |
| Dunkel Index | 0.70882 | 0.49552 | 13.0055 | -0.0394 | 283.190 | 340 | 241 | 99 | 166 | 169 |
| Beck Elo | 0.70175 | 0.50298 | 13.1152 | -1.1366 | 283.193 | 342 | 240 | 102 | 169 | 167 |
| NutShell Retro | 0.70468 | 0.49107 | 13.2403 | -1.1406 | 283.195 | 342 | 241 | 101 | 165 | 171 |
| Marsee | 0.71053 | 0.49068 | 13.1696 | 0.3860 | 285.713 | 342 | 243 | 99 | 158 | 164 |
| Stephen Kerns | 0.72141 | 0.55357 | 13.2930 | -3.7919 | 285.825 | 341 | 246 | 95 | 186 | 150 |
| Bassett Model | 0.70381 | 0.50595 | 13.0540 | -1.2490 | 286.534 | 341 | 240 | 101 | 170 | 166 |
| DP Dwiggins | 0.68063 | 0.46809 | 13.3402 | -3.4083 | 288.246 | 191 | 130 | 61 | 88 | 100 |
| ARGH Power Ratings | 0.72222 | 0.51735 | 13.0746 | -0.7529 | 288.384 | 342 | 247 | 95 | 164 | 153 |
| Linear Regression | 0.74561 | 0.50148 | 13.3796 | -0.8116 | 288.757 | 342 | 255 | 87 | 169 | 168 |
| Sagarin | 0.72807 | 0.49702 | 13.2590 | -1.5895 | 289.517 | 342 | 249 | 93 | 167 | 169 |
| Keeper | 0.71930 | 0.46884 | 13.5427 | -0.4290 | 293.736 | 342 | 246 | 96 | 158 | 179 |
| PerformanZ Ratings | 0.71930 | 0.49258 | 13.3172 | -1.1177 | 294.286 | 342 | 246 | 96 | 166 | 171 |
| Howell | 0.71930 | 0.49682 | 13.4503 | -0.6753 | 299.602 | 342 | 246 | 96 | 156 | 158 |
| Warren Claassen | 0.72807 | 0.50000 | 13.5085 | -1.5746 | 300.145 | 342 | 249 | 93 | 168 | 168 |
| Imes Comprank | 0.70447 | 0.48252 | 13.5215 | -0.9651 | 300.146 | 291 | 205 | 86 | 138 | 148 |
| Nutshell Girl | 0.70760 | 0.50742 | 13.5932 | -1.5051 | 302.535 | 342 | 242 | 100 | 171 | 166 |
| Massey Consensus | 0.73099 | 0.51335 | 13.6469 | -0.7243 | 307.219 | 342 | 250 | 92 | 173 | 164 |
| Massey BCS * | 0.71637 | 0.49258 | 13.5732 | -0.8457 | 313.232 | 342 | 245 | 97 | 166 | 171 |
| Sagarin Elo | 0.69883 | 0.50148 | 13.8124 | -1.6423 | 319.360 | 342 | 239 | 103 | 169 | 168 |
| Anderson/Hester * | 0.70710 | 0.47748 | 13.8421 | -1.3609 | 320.219 | 338 | 239 | 99 | 159 | 174 |
| Colley Rankings * | 0.70175 | 0.47917 | 13.9185 | -0.9162 | 320.895 | 342 | 240 | 102 | 161 | 175 |
| CPA Retro | 0.69298 | 0.53412 | 13.7712 | -0.5298 | 321.405 | 342 | 237 | 105 | 180 | 157 |
| Martien Maas | 0.70175 | 0.51488 | 14.0081 | -0.8904 | 324.670 | 342 | 240 | 102 | 173 | 163 |
| Billingsly | 0.66374 | 0.44807 | 14.2939 | -1.2398 | 328.980 | 342 | 227 | 115 | 151 | 186 |
| Wolfe * | 0.70175 | 0.51039 | 14.0233 | -0.3427 | 329.651 | 342 | 240 | 102 | 172 | 165 |
| Sportrends | 0.68935 | 0.50606 | 14.5725 | -1.1127 | 350.439 | 338 | 233 | 105 | 167 | 163 |
| Tom Benson | 0.69103 | 0.49158 | 14.5393 | -0.7469 | 350.801 | 301 | 208 | 93 | 146 | 151 |
| Super List | 0.71053 | 0.48214 | 15.2454 | -0.9772 | 371.767 | 342 | 243 | 99 | 162 | 174 |
| Least Squares w/ HFA | 0.65789 | 0.49258 | 16.1102 | -1.1122 | 412.168 | 342 | 225 | 117 | 166 | 171 |
| Logistic Regression | 0.67251 | 0.49852 | 19.9079 | -4.7427 | 967.244 | 342 | 230 | 112 | 168 | 169 |
* This system does not make predictions. I make predictions for this
system by translating it to a new scale that allows for making predictions.
Retrodictive records are found by taking the ratings from the current week
and applying them to the entire season to date.
The ideal system would be one that has the highest correct game decisions,
has the smallest mean error(deviation from the actual game result), and has
a bias of zero.
Mean Error = average[abs(prediction-actual)]
Bias = agerage(prediction - actual)
Std. = Standard Deviation of individual game biases