48 Table 24. 



LEAST SQUARES. 



This table gives the values of the probability P, as defined in last table, corresponding to different values of 

 j: I r where r is the " probable error." The probable error r is equal to 0.47694 / /*. 



This factor occurs in the 



Table 25. 

 LEAST SQUARES. 



Values of the factor 0.6745\/-^ . 

 \ »— 1 



equation e. = o.6745\/ --^ for the probable error of a single observation, and other 

 \ «— I 



Smithsonian Tables. 



