INTRODUCTION. 
PAGES 
1-3 The introduction of the terms ‘* statistics,” *‘ statistical,” into 
the English language—4-6. The change in meaning of these 
terms during the nineteenth century—7-9. The present use 
of the terms—10. Definitions of “statistics,” statistical 
methods,” “‘ theory of statistics,” in accordance with present 
usage 8 
PART I.-THE THEORY OF ATTRIBUTES 
CHAPTER 1. 
NOTATION AND TERMINOLOGY. 
1-2. Statistics of attributes and statistics of variables : fundamental 
character of the former—3-5. Classification by dichotomy— 
6-7. Notation for single attributes and for combinations— 
8. The class-frequency—9. Positive and negative attributes, 
contraries—10. The order of a class—11. The aggregate— 
12. The arrangement of classes by order and aggregate— 
13-14. Sufficiency of the tabulation of the ultimate class- 
frequencies—15-17. Or, better, of the positive class-fre- 
quencies—18. The class-frequencies chosen in the census 
for tabulation of statistics of infirmities —19. Inclusive and 
exclusive notations and terminologies . ! 
CHAPTER II 
CONSISTENCE. 
1-3. The field of observation or universe, and its specification by 
symbols—4. Derivation of complex from simple relations by 
specifying the universe — 5-6. Consistence — 7-10. Con- 
ditions of consistence for one and for two attributes— 
11-14. Conditions of consistence for three attributes . 
1-1 
7-16 
17-24 
IX