The Demopædia Encyclopedia on Population is under heavy modernization and maintenance. Outputs could look bizarre, sorry for the temporary inconvenience

Tabulating machinery

From Demopædia
Jump to: navigation, search
Tabulating machinery  (TABULATING machinery)


The process of obtaining statistical data from documents not primarily designed for this purpose is called extraction1. Data may be extracted from documents mechanically2 by using tabulating machinery3 or punched card machines3.


More...