Distance (m) | Plateau begins | Probability | a | b | c |
---|---|---|---|---|---|
100 | 1977 | >0.801 | 0.1506 | 9.2278 | 0.0400 |
200 | 1973 | >0.846 | –0.1516 | 9.1046 | 0.0901 |
400 | 1974 | >0.695 | 0.0293 | 8.0870 | 0.0935 |
800 | 1973 | >0.869 | –0.1541 | 6.9078 | 0.0580 |
1500 | 1978 | >0.987 | 0.1495 | 6.3156 | 0.0450 |
For the 200 m and 800 m races, all values for a are significantly less than 0 (P<0.05); a is significantly >0 for the 100 m and 1500 m races and indistinguishable from 0 for the 400 m race. The probability cited here is the likelihood that any calculated correlation between speed and year is due to chance alone