The Cambridge Dictionary of Statistics
REF QA276.15.E84 2002
Provides definitions and formulae.
Encyclopedia of Statistical Sciences
Ref QA276.14.E5
This
nine-volume encyclopedia contains signed articles on topics and key
statisticians. Each article includes a bibliography and list of key
terms for reference to other articles; many contain formulae.
Standard Probability and Statistics Tables and Formulae
Ref QA273.3.Z95 2000
A
very quantitative review of concepts with formulae and tables. The book
is arranged by concept within chapters; use either the table of
contents or index to find your statistic of interest.