Can we derive the Variance of the least squares slope WITHOUT assuming that $X_i$s are fixed or deterministic?
36807
Derivation of OLS Variance
120781
Least squares Problem with Non Negativity Constraints
110595
Linear regression with slope constraint
2745
Is propagation of uncertainties linear?
69828
How do I use the standard regression assumptions to prove that $\hat{\sigma}^2$ is an unbiased estimator of $\sigma^2$?
72998
Is regression line (for a simple "Y given X" regression, no interaction etc) always unique?
80644
Finding the unbiased variance estimator in high dimensional spaces
128639
Homoskedasticity Assumption: Var(y|x)=Var(u|x)=constant?
46076
Least Squares with $ {L}_{2} $ (L2) Linear Norm Regularization (Not Squared)
94853
The linearity of variance
123850
Sample variance derivation
62513
Proving that the estimate of a mean is a least squares estimator?
22236
Is least squares the standard method to fit a 3 parameters Gaussian function to some x and y data?
34259
Variance of linear combinations of correlated random variables
87493
Unbiased estimator with minimum variance for $1/\theta$
20900
Regression without intercept: deriving $\hat{\beta}_1$ in least squares (no matrices)
77498
Standard error of regression coefficient without raw data