Erricker, B.C.
Elementary statistics
Hodder and Stoughton, 1981
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Naiman, Arnold
Understanding statistics
McGraw-Hill, 1983
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Rickmers, Albert D.
Statistics: an introduction
McGraw-Hill, 1967
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Wonnacott, Thomas H., 1935-
Introductory statistics
John Wiley & Sons, 1990
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Wonnacott, Thomas H., 1935-
Introductory statistics
John Wiley & Sons, 1972
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