NCAA Division I Women's Basketball committee chair Marilyn McNeil was asked "What factors led to Louisiana Tech getting a higher seed than WAC champion Fresno State, and also how Fresno State ended up with its seed, its highest ever?" at a post-announcment media conference.
She basically said, "you study what these teams have done over the whole entire season" but you can read the full response -- the second among the full list of questions on the NCAA web site. See "McNeil addresses selecting 2011 field" at http://www.ncaa.com/news/basketball-...ing-2011-field and also have links to both a printable bracket and an interactive bracket.