ZHANG, Ruda April 09, 2022:  More on least squares (general, iterally reweighted) [1529f42]
ZHANG, Ruda December 19, 2021:  More on least squares. [95459e6]
ZHANG, Ruda December 19, 2021:  More on least squares. [c96aecb]
ZHANG, Ruda December 19, 2021:  More on least squares. [caf355e]
ZHANG, Ruda April 18, 2020:  More on joint and marginal distributions. [24ed590]
ZHANG, Ruda December 30, 2018:  Use dollar style math markup. [1b7036c]
ZHANG, Ruda March 23, 2018:  Global remove trailing whitespaces [2b7ff90]
ZHANG, Ruda November 24, 2017:  Define standard error of a statistic. [d7a028a]
ZHANG, Ruda November 24, 2017:  Reformat estimator of sample variance [0a2316d]
ZHANG, Ruda November 24, 2017:  Correct symbol of OLS notes [301249b]
ZHANG, Ruda November 24, 2017:  Reformat OLS notes [dd60e29]
ZHANG, Ruda November 24, 2017:  Rename LS estimators [eca806e]