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Underfltti ng vs. oveffitting
U{*derfkflnsldah nonllnlerdihampirf denganrnodel Hnier
erer*tt$ng:wlde rnde}ffir*,t*rqggler rcksiF-Elk?!
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A straight-line fit forced0fit0 a cunred'det* set
Prcdicti$ from aI$&gf*e petfr*omiat
Netrl&tepoint
l-easLsqr*ares lixe
n* br+ &,X * flXt* ... + b,u{"eives a ;xrf*ct fit to sixteen data poinB butrann$t predict the *everrt*c*th p$int as we{las a {irst-degree le**t-squares line.
ffiffi:::;pr*dicticn
A lS-degree polynomial