An Introduction to the theory of statistics

Bibliographic data

Monograph

Identifikator:: 1751730271

URN:: urn:nbn:de:zbw-retromon-127610

Document type:: Monograph

Author:: Yule, George Udny http://d-nb.info/gnd/12910504X

Title:: An Introduction to the theory of statistics

Edition:: 8. ed. rev

Place of publication:: London

Publisher:: Griffin

Year of publication:: 1927

Scope:: XV, 422 S; Ill., Diagr

Digitisation:: 2021

Collection:: Economics Books

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CONTENTS. CHAPTER VIL AVERAGES, 18 1. Necessity for quantitative definition of the characters of a frequency-distribution—2. Measures of position (averages) and of dispersion—3. The dimensions of an average the same as those of the variable—4. Desirable properties for an average to possess—5. The commoner forms of average— 6-13. The arithmetic mean : its definition, calculation, and simpler properties—14-18. The median: its definition, calculation, and simpler properties—19-20. The mode : its definition and relation to mean and median—21. Summary comparison of the preceding forms of average—22-26. The geometric mean : its definition, simpler properties, and the cases in which it is specially applicable—27. The harmonic mean : its definition and calculation . . 106-132 CHAPTER VIIL MEASURES OF DISPERSION, ETC, 1. Inadequacy of the range as a measure of dispersion— 2-13. The standard deviation : its definition, calculation, and properties—14-19. The mean deviation : its definition, calculation, and properties—20-24. The quartile deviation or semi-interquartile range—25. Measures of relative dis- genion 2 Measures of asymmetry or skewness—27-30. he method of grades or percentiles . : . 133-156 CHAPTER IX. CORRELATION. 1-3. The correlation table and its formation—4-5. The correlation surface—6-7. The general problem—=8-9. The line of means of rows and the line of means of columns: their relative positions in the case of independence and of varying degrees of correlation—10-14. The correlation-coefficient, the re- gressions, and the standard-deviations of arrays—15-16, Numerical caleulations— 17. Certain points to be re- membered in calculating and using the coefficient . . 157-190 CHAPTER X, CORRELATION: ILLUSTRATIONS AND PRACTICAL METHODS. 1. Necessity for careful choice of variables before proceeding to calculate 7—2-8. Illustration i.: Causation of pauperism— 9-10. Illustration ii.: Inheritance of fertility—11-13. X1 PAGE

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