How to do linear fitting of data to get R square value and coeficient of a,b ?

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Debarati Ghosh
Debarati Ghosh 2023-11-25
评论： Debarati Ghosh 2024-3-27
I got x and y value. I want to fit the date linearly . I want to get Rsquare value and value of a and b. How to do in matlab?

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Ive J
Ive J 2023-11-30
Ran in:
n = 100;
x = randn(n, 1);
y = randn(n, 1);
mdl = fitlm(x, y)
mdl =
Linear regression model: y ~ 1 + x1 Estimated Coefficients: Estimate SE tStat pValue ________ _______ _______ _______ (Intercept) 0.014768 0.10405 0.14193 0.88742 x1 0.11976 0.10612 1.1286 0.26182 Number of observations: 100, Error degrees of freedom: 98 Root Mean Squared Error: 1.03 R-squared: 0.0128, Adjusted R-Squared: 0.00276 F-statistic vs. constant model: 1.27, p-value = 0.262

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