Elementary: Freedman, Pisani, Purves, "Statistics" (uses some unconventional terminology) Intermediate: Rice, "Mathematical Statistics and Data Analysis" Wass

Elementary: Freedman, Pisani, Purves, "Statistics" (uses some unconventional terminology) Intermediate: Rice, "Mathematical Statistics and Data Analysis" Wasserman's "All of Statistics" is also a very good book except that it is too terse to be a primary text.