Table 26. ^ 



LEAST SQUARES. 



Valnes ol the factor 0.6745a/ ,^ ,, . 



\ w(»— 1) 



This factor occurs in the equation e = 0.6745-%/ /"-^ for the probable error of the arithmetic 1 



\ «(«— i) 



49 



Table 27. 

 LEAST SQUARES. 



Values ol the factor 0.8453\/ -^-?^-j-,. 

 \ n(,n—l) 



This factor occurs in the equation f, = 0.845377= for the probable error of a single observation 



y n\n — i) 



Table 28. 

 LEAST SQUARES. 



Values of 0.8453 ,, — ^ . 

 nVn— 1 



This table gives the average error of the arithmetic mean when the probable error is one. 



Smithsonian Tables. 



