Butterbaugh, G. I. (1952). 1001 questions in elementary statistical analysis. Wm. C. Brown.
Cita Chicago Style (17a ed.)Butterbaugh, Grant I. 1001 Questions in Elementary Statistical Analysis. Dubuque, Iowa: Wm. C. Brown, 1952.
Cita MLA (9a ed.)Butterbaugh, Grant I. 1001 Questions in Elementary Statistical Analysis. Wm. C. Brown, 1952.
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