What is estimated by $R^2$?
1691
What is an unbiased estimate of population R-square?
72702
Estimate on the derivative at fixed point
41983
What happens when I include a squared variable in my regression?
116581
Quadratic models with R. The use of poly(..) and I(..) functions (R-language)
2898
What's the MSE of $\hat{Y}$ in ordinary least squares using bias-variance decomposition?
127294
Geometric interpretation of multiple correlation coefficient $R$ and coefficient of determination $R^2$
132568
Adjusted R-squared formula
152417
Why to report R squared?
151995
Why are effect size estimates (such as $R^2$) difficult in mixed-effects models?
69094
Relationship between $R^2$ and correlation coefficient
68768
least square estimator issue
1265
Is my model any good, based on the diagnostic metric ($R^2$/ AUC/ accuracy/ RMSE etc.) value?
85486
Show that $S = \sqrt{S^2}$ is a biased estimator of $\sigma$ given a random sample from a normal distribution ...
147938
MAPE vs R-squared in regression models
105432
Formula for 95% confidence interval for $R^2$
73927
Is $\mathbb{R}$ a subset of $\mathbb{R}^2$?
96036
If $X$ takes on a Gamma Distribution, how can I find $X^2$, $X^3$, etc?