On the Systematlc Fitting qf Curves 



B'E=^''xH,K, 



wliich dülonniiie the iiitercepts siiice JIJ{ aiiil JIJ{ are knuwn. 



14 



whence 

 similarly 



Gase (ii). To fit a parabola of the second order to a seines of observations. 

 Let the parabola be y = yo\eo + e,-i + e.Jjj>. 



Oiir cqiiations are now 



\, = le,. 



Hence e« = ^ (SX« — öXg), 



e, = 3a,, , 



