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Research & Statistics

Browse 40+ free research methodology and statistics books. The foundations of scientific inquiry.

Lex Official•40 books

A System of Logic: Ratioci...1843

John Stuart Mill

A System of Logic: Ratiocinative and Inductive, 7th Edition, Vol. IIJohn Stuart MillJohn Stuart Mill • 1843 • English

Introduction À L'étude De ...1865

Claude Bernard

Introduction À L'étude De La Médecine ExpérimentaleClaude BernardClaude Bernard • 1865 • French

Inquiries into Human Facul...1883

Francis Galton

Inquiries into Human Faculty and Its DevelopmentFrancis GaltonFrancis Galton • 1883 • English

Crime and Its Causes1891

William Douglas ...

Crime and Its CausesWilliam Douglas MorrisonWilliam Douglas Morrison • 1891 • English

Reflections on the Decline...

Charles Babbage

Reflections on the Decline of Science in England, and on Some of Its CausesCharles BabbageCharles Babbage • English

Introduction to the Study ...1898

Charles Victor L...

Introduction to the Study of HistoryCharles Victor LangloisCharles Victor Langlois • 1898 • English

Fatigue Study: The Elimination of Humanity's Greatest Unnecessary Waste. a First Step in Motion StudyFrank B. GilbrethFrank B. Gilbreth • 1916 • English

Harvard Psychological Stud...

Unknown

Harvard Psychological Studies, Volume 1: Containing Sixteen Experimental Investigations from the Harvard Psychological Laboratory.UnknownUnknown • English

The Measurement of Intelli...

Lewis M. Terman

The Measurement of Intelligence: An Explanation of and a Complete Guide for the Use of the Standard Revision and Extension of the Binet-Simon Intelligence ScaleLewis M. TermanLewis M. Terman • English

The Logic of Chance, 3rd E...1834

John Venn

The Logic of Chance, 3rd Edition: An Essay on the Foundations and Province of the Theory of Probability, with Especial Reference to Its Logical Bearings and Its Application to Moral and Social Science and to StatisticsJohn VennJohn Venn • 1834 • English

The Principles of Science: A Treatise on Logic and Scientific MethodWilliam Stanley JevonsWilliam Stanley Jevons • 1874 • English

On Limitations to the Use ...1881

John Wesley Powell

On Limitations to the Use of Some Anthropologic DataJohn Wesley PowellJohn Wesley Powell • 1881 • English

The Aboriginal Population ...

Sherburne Friend...

The Aboriginal Population of the North Coast of CaliforniaSherburne Friend CookSherburne Friend Cook • English

A Statistical Inquiry into...

Alexander Hughes...

A Statistical Inquiry into the Nature and Treatment of EpilepsyAlexander Hughes BennettAlexander Hughes Bennett • English

Adenoids and Diseased Tons...1922

Margaret Cobb Ro...

Adenoids and Diseased Tonsils: Their Effect on General IntelligenceMargaret Cobb RogersMargaret Cobb Rogers • 1922 • English

A Racial Study of the Fiji...1958

Norman E. Gabel

A Racial Study of the FijiansNorman E. GabelNorman E. Gabel • 1958 • English

The Classification of Pate...1830

United States. P...

The Classification of PatentsUnited States. Patent OfficeUnited States. Patent Office • 1830 • English

Harvard Psychological Studies, Volume 2UnknownUnknown • 1906 • English

Novum Organon Renovatum: Being the Second Part of the Philosophy of the Inductive SciencesWilliam WhewellWilliam Whewell • 1858 • English

Introduction to the Scientific Study of EducationCharles Hubbard JuddCharles Hubbard Judd • 1918 • English

A Study of Association in ...1910

Grace Helen Kent

A Study of Association in InsanityGrace Helen KentGrace Helen Kent • 1910 • English

United States Census Figur...

United States. B...

United States Census Figures Back to 1630United States. Bureau of the CensusUnited States. Bureau of the Census • English

Noteworthy Families (moder...

Francis Galton

Noteworthy Families (modern Science): An Index to Kinships in Near Degrees Between Persons Whose Achievements Are Honourable, and Have Been Publicly RecordedFrancis GaltonFrancis Galton • English

Scientific American Supplement, No. 711, August 17, 1889VariousVarious • English

Research Methods in EcologyFrederic E. ClementsFrederic E. Clements • 1905 • English

Scientific American Supple...

Various

Scientific American Supplement, No. 595, May 28, 1887VariousVarious • English

The High School Failures: ...

F. P. O'Brien

The High School Failures: A Study of the School Records of Pupils Failing in Academic or Commercial High School SubjectsF. P. O'BrienF. P. O'Brien • English

On-Line Data-Acquisition Systems in Nuclear Physics, 1969National Research Council . Ad Hoc Panel on On-line Computers in Nuclear ResearchNational Research Council . Ad Hoc Panel on On-line Computers in Nuclear Research • English

Experimentelle PsychologieJohannes LindworskyJohannes Lindworsky • 1921 • German

Taxonomy of the Chipmunks,...

John A. White

Taxonomy of the Chipmunks, Eutamias Quadrivittatus and Eutamias UmbrinusJohn A. WhiteJohn A. White • English

A New Species of Frog (gen...1962

Robert G. Webb

A New Species of Frog (genus Tomodactylus) from Western MéxicoRobert G. WebbRobert G. Webb • 1962 • English

On the Construction of Cat...1853

Charles C. Jewett

On the Construction of Catalogues of Libraries and Their Publication by Means of Separate, Stereotyped Titles: With Rules and ExamplesCharles C. JewettCharles C. Jewett • 1853 • English

The Ohio Journal of Science, Vol. XVI, No. 1, November 1915VariousVarious • 1915 • English

La Cryptographie, Ou, L'art D'écrire En ChiffresP. L. JacobP. L. Jacob • French

Création D'un Répertoire Bibliographique Universel: Conférence Bibliographique Internationale, 1895, Publication No. 1Henri La FontaineHenri La Fontaine • 1895 • French

The Indian Operation of Couching for CataractRobert Henry ElliotRobert Henry Elliot • 1917 • English

Records of Harvest Mice, R...

Sydney Anderson

Records of Harvest Mice, Reithrodontomys, from Central America, with Description of a New Subspecies from NicaraguaSydney AndersonSydney Anderson • English

A Szociológia Módszere1950

mile Durkheim

A Szociológia Módszeremile Durkheimmile Durkheim • 1950 • Hungarian

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