Studied from its original page
Walker's population pyramid
Mr. Wines' method (Walker's preface) · the 'hollow-backed' type figure (the Blind) · ancestor of the population pyramid
- Made by
- Frederick H. Wines, in Walker's Statistical Atlas
- Year
- 1874
- Field
- Social science and psychology
- Kind
- Data display
- Room
- How a group spreads
See the original page — Pl. XLVII, 'Chart showing the distribution by age and sex of Blindness' (archive leaf n168)
Published 1874 (A, and also a US federal work) and a government work whose compiler (1897) and method author Wines (1912) both died before 1955 (B).
The data it needs
unitidentity · categoricalclassaxis (along the spine) · ordinal · age decadepartside · categorical · exactly two memberscountordinate length (per mille of the unit total) · quantitative · persons
Built in 6 steps, as its maker described
Preface pp. 2-3; Pl. XLVII-L (Wines); the method also on Pl. XXXVIII, XXXIX, XLIII, XLIV
2 other forms share this skeleton
Source
Walker 1874, Statistical Atlas of the United States
Attribution checked against the source