### ORIGINAL PREFACE

These notes are based on a series of lectures given at
the Radiation Laboratory in the summer of 1958. I wish to
make clear my lack of familiarity with the mathematical literature
and the corresponding lack of mathematical rigor in this
presentation. The primary source for the basic material and
approach presented here was Enrico Fermi. My first introduction
to much of the material here was in a series of discussions with
Enrico Fermi, Frank Solmitz, and George Backus at the University
of Chicago in the autumn of 1953. I am grateful to Dr. Frank
Solmitz for many helpful discussions and I have drawn heavily
from his report "Notes on the Least Squares and Maximum Likelihood
Methods." [1]
The general presentation will be to study the
Gausssian distribution, binomial distribution, Poisson distribution,
and least-squares method in that order as applications
of the maximum-likelihood method.

August 13, 1958