运用MATLAB拟合二次曲线后,怎么做误差分析?

2025-01-04 04:24:25
推荐回答(2个)
回答1:

利用cftool曲线拟合工具箱:
Linear model Poly2:
f(x) = p1*x^2 + p2*x + p3
Coefficients (with 95% confidence bounds):
p1 = -0.03816 (-0.05458, -0.02173)
p2 = 13.56 (12.62, 14.51)
p3 = -1.28 (-8.511, 5.952)
Goodness of fit:
SSE: 248
R-square: 0.9993
Adjusted R-square: 0.9992
RMSE: 5.952

注:
1.误差平方和(SSE)
2. R-Square(复相关系数或复测定系数)
3. Adjusted R-Square(调整自由度复相关系数)
4.Root mearn squared error(RMSE),(均方根误差)

回答2:

有公式就能给你编