In OLS is the vector of residuals always 0?
14481
How do I show that the sum of residuals of OLS are always zero using matrices
150717
How to avoid log(0) term in regression
34206
Quadratic form under $\mathbb{C}$ finite-dimension vector space always have a nonzero vector that yields zero?
10796
Interpreting the residuals vs. fitted values plot for verifying the assumptions of a linear model
37143
What if residuals are normally distributed, but y is not?
9250
Can the zero vector be an eigenvector for a matrix?
122562
Cross product term in linear regression why is it zero
20153
What is the distribution of $R^2$ in linear regression under the null hypothesis? Why is its mode not at zero when $k>3$?
149164
Apparent correlation between standardized residuals and predicted in regression
39548
Multicollinearity in OLS
153119
$x^TAx=0$ for all $x$ when $A$ is a skew symmetric matrix
156431
Testing for a vector of reals
115297
How should I interpret this residual plot?
38471
Is it possible to interpret regression output omitting the intercept?
22781
Understanding and interpreting consistency of OLS
2762
Mapping of zero vector under a linear transformation
116349
Heteroskedasticity - residual plot interpretation