Table B-2. Standard Errors of Estimated Percentages for Characteristics of Vacant Rental and Homeowner Housing Units: 1995 Estimated percentage Base 1 or 99 2 or 98 5 or 95 10 or 90 15 or 85 20 or 80 25 or 75 50 Vacant rental units......... 0.1 0.2 0.3 0.4 0.5 0.5 0.6 0.7 Vacant homeowner units...... 0.2 0.3 0.5 0.6 0.7 0.8 0.9 1.0