Table A7.

Correlation between population size and speed in women's races

Distance (m)Plateau begins (population, billions)Probability
1002.393>0.369
2002.184>0.146
4002.063>0.703
8002.063>0.334
15002.143>0.987
• The probability cited here is the likelihood that any calculated correlation between speed and population size is due to chance alone