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I am getting negative values ​​for R2 Squared after doing linear regression on my data. What does he offer?

I am getting negative values ​​for R2 Squared after doing linear regression on my data. What does he offer? Does this mean that the conclusion is useless?

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There's a pretty good deal of this already existing on the stats stackexchange, which I posted as a link, as much of this answer will be similar, but perhaps less extensive.

In short, your value R^2

compares your regression to a horizontal line. If the value is R^2

less than horizontal, you will see a negative value.



Picture posted below for your reference:

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