Table 24. 

 LEAST SQUARES. 



57 



Table 25. 

 LEAST SQUARES. 



Values of the factor 0.6745-%/-^^. 

 \ n— 1 



This factor occurs in the equation r^ =r o.674S\/ for the probable error of a single observation, and other 



\n—i 

 similar equations. 



Smithsonian Tables. 



