528 



APPENDIX 



PROBA B I LI T Y 



.Ok) CD ^1 O <_n U U> 



O O o 



o b e ° o 



O o P o o 



PROBABILI TY 



figure A-3. 77j^ ^- aA/d t distributions. To read the chart with a ^" value of 17 

 based on 7 degrees of freedom, the vertical line corresponding to a v 2 value of 17 is 

 followed upward until it intersects the curve corresponding to N - 7. Directly to the 

 left of this point the probability, .017, is read off. With the chart inverted, probabili- 

 ties for the t distribution are read in exactly the same way. The probability given is 

 the probability of a numerically greater deviation. {Courtesy of J. F. Crow; from 

 Genetics Notes, Burgess Publ. Co.) 



