Data

• Summary Tables

• • Usually one attribute, by zone (2D margin)
  • Contingency table
  • Large sample: 20% or 100%
  • Sometimes 2-3 attributes by zone
  • Used as Target Margins

• Public Use Microdata Sample (PUMS)

• • List; almost all attributes, except zones
  • Small sample (1-2%)
  • Canada: defined for each large Census Metropolitan Area (CMA)
  • Used as Source Sample