Fraser, D.A.S.
Statistics: an introduction
John Wiley & Sons, 1967
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Tippett, L.H.C.
The methods of statistics
Williams and Norgate, 1952
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Yamane, Taro
Statistics : an introductory analysis
New York University, 1967
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Johnson, Palmer O.
Modern statistics methods : descriptive and inductive
Rand McNally, 1959
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Kendall, M.G.
Exercises in theoritical statistics with answers and hints on solutions
Griffin , 1968
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