matlab多项式拟合的一个疑问。

f(x) = p1*x^2 + p2*x + p3
Coefficients (with 95% confidence bounds):
p1 = 1.72 (0.9384, 2.503)
p2 = 54.63 (20.93, 88.33)
p3 = -331 (-621.1, -40.95)
Goodness of fit:
SSE: 6.069e+004
R-square: 0.9962
Adjusted R-square: 0.9951
RMSE: 93.12
这是我拟合后的结果,曲线显示拟合很好,为什么SSE和RMSE很大呢,不是越小越好吗,哪里出了问题,求高人啊

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2022-11-25

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