Tippett, L. H. C.
The methods of statistics / L.H.C. Tippett
Williams and Norgate , 1952
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Johnson, Palmer O., author
Modern statistics methods : descriptive and inductive
Rand McNally, 1959
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Fraser, D.A.S.
Statistics: an introduction/ D.A.S Fraser
John Wiley and Sons, 1967
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Croxton, Frederick E., author
Applied general statistics
Prentice-Hall, 1955
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Langley, Russell, author
Practical statistics simply explained
Dover , 1971
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