Purge bibtex file

Removes bibtex entries that don't appear in the text.  These entries
are left over from earlier versions.
Draft introductory random variable material

Draft of an intro to the probability theory section; it tries to
motivate probabilty measures from densities.  Formally, I guess it's
trying to informally define probabilities from Radon-Nikodym
derivatives w/rt Lebesgue measure.  I also start to rewrite the
sigma-algebra material emphasizing information sets.
Edit introductory probability material

This commit rewords and edits some of the introductory probability
material---random variables, conditioning, etc.
Edit introductory probability material

This commit changes a few points in the introduction to borel-measurability.
Merge branch 'master' into dev
Tweak bibtex record of this project

This commit moves the document version info into the 'month' field
of the provided bibtex entry.  It looks a little cleaner that way.
Change XeLaTeX to LaTeX in each document's preamble

The XeLaTeX symbol is ugly and less recognized than LaTeX's.
Add rv material and edit probability section

This commit
- starts a new section on random variables immediately after the
  'information sets' material in the probability document.
- adds to and revises the material on conditioning
- tweaks alignment of the source code
- moves some of the material on multivariate rvs
Move and edit conditioning material

- Adds a heuristic discussion of conditional densities to the probability
  introduction
- Moves conditional probability material to discussion of probability
  spaces and discussion of independent sigma fields to the information set
  section
- Moves outline of conditional expectation to the section on expectations
Edit probability text

Makes a few minor corrections to the text of the probability material.
Add 'list of tables' and 'list of figures' to probability document

We'll wait for other documents to have tables and figures before adding
similar lists to them.
Edit expectation material

Consolodate the material on expectations and conditional expectation, and
start a first draft of actual text for that section.
Merge branch 'master' into dev
Reorganize linear regression material

This commit moves around some of the linear regression material;
- Asymptotic statistical properties are moved to the asymptotics document
- Algebraic properties and multiple testing are moved to the linear
  regression document
- Move material about normal r.v.s and quadratif forms to the probability
  introduction
- Some edits are made to the finite sample inference and estimtion documents.

reorg
Reorganize finite-sample material

This commit moves the finite sample material around and prettys up its
source code.
Move version number back to year field of bibtex entry

This commit moves the project's version number back into the year field for the
provided bibtex record.  It should be in the text when cited.
Revise and rewrite introductory probability material on moments and densities

This commit cleans up some of the source code, moves around probability material,
and fleshes out the text covering moments and specific distributions.
Correct typo in proof that VCV is psd

The proof that variance covariance matrices are positive semidefinite had a typo that
this commit corrects.
Correct typos and minor errors in probability document
Move point estimation and inference into separate documents

This change tweaks the document structure to match my lecture plan better; no other
real reason.