Description:
This demo demonstrates a quick mashup on public libraries collections data from Public Libraries Survey Fiscal Year 2007
It compares the total library collection volume (referred as "books") with the number divided by non-duplicated population of legal service area at state level.
Source data series:
State Summary/State Characteristics Data File(pusum07.txt).
Variables used:
BKVOL:
Print materials (including books, serial back files, and
government documents)
POPU_UND:
Unduplicated population of the legal service area for the
library. This value is calculated by prorating the library's
population of legal service area (POPU_LSA) to the
state's total population of legal service areas (total
POPU_LSA), and applying the ratio to the state-reported
total unduplicated population of legal service areas. The
latter item, a single figure reported by the state data
coordinator, is also named POPU_UND but is located
on the State Summary/State Characteristics Data File.
Source:
Public Libraries Survey: Fiscal Year 2007,
Data Dictionary
per capita = BKVOL / POPU_UND .