Sellers, Gene R.
Elementary statistics / Gene R. Sellers
WB. Saunders, 1977
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Runyon, Richard P.
Business statistics
Ill. Richard D. Irwin , 1982
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Walpole, Ronald E.
Introduction to statistics
Macmillan, 1968
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Freund, John E.
Mathematical statistics
Prentice-Hall, 1980
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Allen, R.G.D.
Statistics for economics
Hutchinson University Library, 1972
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