TABLE 25. 

 LEAST SQUARES. 



57 



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

 x I r where r is the " probable error." The probable error r is equal to 0.476947 h. 



TABLE 26. 

 LEAST SQUARES. 



Values of the factor 0.6745 A/ ^-=. 



This factor occurs in the equation r s = 0.6745-% / - for the probable error of a single observation, and other 



similar equations. 



SMITHSONIAN TABLES. 



