How to interpret poor $R^2$ score but good RMSE value?
1265
Is my model any good, based on the diagnostic metric ($R^2$/ AUC/ accuracy/ RMSE etc.) value?
112346
How to decide whether missing values are MAR, MCAR, or MNAR
153494
What do I interpret from the unit root test?
64805
How to calculate relative error when true value is zero?
127924
How to deal with an error such as "Coefficients: 14 not defined because of singularities" in R?
54112
Linear regression what does the F statistic, R squared and residual standard error tell us?
44780
Are RSS and R^2 related to training error only?
64409
Mean absolute error OR root mean squared error?
24013
Is a weighted $R^2$ in robust linear model meaningful for goodness of fit analysis?
20153
What is the distribution of $R^2$ in linear regression under the null hypothesis? Why is its mode not at zero when $k>3$?
44278
$R^2$ for least absolute deviation regression
7337
How should tiny $p$-values be reported? (and why does R put a minimum on 2.22e-16?)
13616
Removal of statistically significant intercept term increases $R^2$ in linear model
3845
Interpretation of R's lm() output
121678
What if the P-Value is less than 0.05, but the test statistic is also less than the critical value?
46078
Confidence bands in case of fitting ARIMA in R?
94881
How to typeset asymmetrical confidence level limits / uncertainties?