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Econometrics is a field of statistics dealing with applications to economics.

2 votes

Why is R squared zero when the best-fit line is horizontal?

I calculate R-squared as "1.0 - (absolute_error_variance / dependent_data_variance)", so if all errors are zero (no variance) the R-squared is then "1.0 - (0.0 / dependent_data_variance)", or more sim …
James Phillips's user avatar