Ott, Lyman
An introduction to statistical methods and data analysis
Duxbury Press, 1993
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Stoodley, K.D.C.
Applied statistical techniques
John Wiley & Sons, 1980
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Statistical methods for comparative studies : techniques for bias reduction
Sharon Anderson [and others]
John Wiley & Sons, 1980
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Lindgren, Bernard W.
Statistical theory
Macmillan, 1968
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Aitken, A.C.
STatistical mathematics
Oliver and Boyd , 1974
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