Freund, John E.
Modern elementary statistics
Pearson Prentice Hall, 2007
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Freund, John E.
Modern elementary statistics
Pearson Education, 2007
 Multimedia
Venables, W.N.
Modern applied statistics with S-plus
Springer-Verlag, 1994
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Freund, John E.
Modern elementary statistics
Prentice-Hall, 1980
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Lapin, Lawrence L.
Statistics for modern business decisions
Harcourt Brace Jovanovich, 1990
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