For biostatisticians, adds Bayesian parametric survival models (exponential, Weibull, Gompertz) via bayes: streg . This is a game-changer for clinical trial analysis, where prior information from historical trials can be incorporated as informative priors.
Stata 18, released in April 2023, represents a significant update to the statistical software suite, focusing on modern econometric techniques, improved data visualization, and streamlined reporting Stata 18
return(invsym(X'*X)*X'*y)