Table B-1.  Standard Errors of Vacancy Rates by Area:  2001
                   (Range of 68 chances out of 100)



    Rental                       Rate   Standard   Year-to-   Standard
                                  for   error on year diff-   error on
                                 year       rate     erence difference1

United States..............       8.4        0.1        0.4        0.2
  Inside Metropolitan Areas       8.0        0.1        0.3        0.2
    In central cities......       8.6        0.2        0.5        0.2
    Not in central cities..       7.4        0.2        0.2        0.2
  Outside Metropolitan Area      10.4        0.3        1.0        0.4
  Northeast................       5.3        0.2       -0.3        0.3
  Midwest..................       9.7        0.3        0.9        0.4
  South....................      11.1        0.2        0.6        0.3
  West.....................       6.2        0.2        0.4        0.3

                                   For-rent as a percent of all housing units

United States..............       2.6        (z)        0.1        0.1
  Inside Metropolitan Areas       2.7        (z)        0.1        0.1
  Outside Metropolitan Area       2.4        0.1        0.3        0.1
  Northeast................       1.8        0.1       -0.1        0.1
  Midwest..................       2.6        0.1        0.2        0.1
  South....................       3.3        0.1        0.2        0.1
  West.....................       2.2        0.1        0.1        0.1


     Homeowner
                                 Rate   Standard   Year-to-   Standard
                                  for   error on year diff-   error on
                                 year       rate     erence difference1

United States..............       1.8        (z)        0.2                    (z)
  Inside Metropolitan Areas       1.6        (z)        0.2        0.1
    In central cities......       2.1        0.1        0.3        0.1
    Not in central cities..       1.4        (z)        0.1        0.1
  Outside Metropolitan Area       2.3        0.1        0.2        0.1
  Northeast................       1.2        0.1        (z)        0.1
  Midwest..................       1.7        0.1        0.4        0.1
  South....................       2.1        0.1        0.2        0.1
  West.....................       1.6        0.1        (z)        0.1


                                   For-sale-only as a percent of all housing units

United States..............       1.1        (z)        0.1        (z)
  Inside Metropolitan Areas       1.0        (z)        0.1        (z)
  Outside Metropolitan Area       1.4        0.1        0.1        0.1
  Northeast................       0.7        (z)        (z)        0.1
  Midwest..................       1.1        (z)        0.3        0.1
  South....................       1.3        (z)        0.1        0.1
  West.....................       0.9        (z)        (z)        0.1

  Z less than 0.05 percent.
  1Difference between 2001 rates and 2000 rates.