May 7th, 2009| 02:22 pm | Posted by hlee

Almost 100 years ago, A.S. Eddington stated in his book *Stellar Movements* (1914) that

…in calculating the mean error of a series of observations it is preferable to use the simple mean residual irrespective of sign rather than the mean square residual

Such eminent astronomer said already *least absolute deviation* over *chi-square*, if I match *simple mean residual* and *mean square residual* to relevant methodologies, in order. Continue reading ‘a century ago’ »

Tags:

chi-square minimization,

Eddington,

inference,

LAD,

Laplace,

mse,

PyMC,

Python,

R.A.Fisher,

utility function Category:

Astro,

Cross-Cultural,

Quotes,

Stat,

Uncertainty |

Comment
Jun 26th, 2008| 08:03 pm | Posted by hlee

What if R. A. Fisher was hired by the Royal Observatory in spite that his interest was biology and agriculture, or W. S. Gosset^{[1]} instead of brewery? An article by E.L. Lehmann made me think this *what if*. If so, astronomers could have handled errors better than now. Continue reading ‘On the history and use of some standard statistical models’ »