R2 approximation error as in Excel

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Lev Mihailov
Lev Mihailov 2019-7-24
编辑： Lev Mihailov 2019-7-24
Hello! In Excel, when building a trend line, it is possible to show an error of R2 approximation, and can this be done in a matlab environment?
my data egg = [20 25 22 24 ...] milk = [102,152 134,141 ...]
Animalfivefive_fit = polyval(egg,milk);
tried to build a trend line, but all values ​​are 'inf'
My task is to do everything as in Excel, but only in the matab

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回答（1 个）

Torsten
Torsten 2019-7-24
https://de.mathworks.com/help/stats/coefficient-of-determination-r-squared.html

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