PALESTINIAN SOCIETY - Fafo

there were severaI main entrances, presurnably leading to different
groups of households, each would be regarded as a separate housing
unit.
During the proeess of sample preparations a procedure for
direct selection of sample households was considered. However,
inspection of some cells showed that such a procedure would generaUy
be very difficult to implement, due to complex housing structures,
inadequate detailing and updating of maps, non-display of road names
and house numbers, absenee of doorbells or other hints to help identify
pre-selected households. As opposed to the problems of enumerating
households, housing units (front doors) proved to be more easily
identifiable even in complex areas.
For each sample cell an enumeration system was developed for
identifying and seleeting housing units. Briefly stated, it incIuded
random selection of spots defining the starting points from which
uniquely specified "enumeration walks" (instruetions for the directions
of the walk and how to count housing units) were to be initiated.
During these walks eve ry 3rd housing unit was to be selected untila
full subsample was obtained. For each "enumeration walk" 4-6
housing units were normally selected. To help the data collectors
identify sample housing units, the field work supervisors were thoroughl
y instructed -theoretically as well as through training in the field
- in the selection of housing units and preparation of map sketches of
every "enumeration walk".
In order to ease the practical identification, the starting points
normally were designated at comers of road crossings within the cells.
Denote by H(s,k?c) the total number of housing units within cell
(s,k,c) "':' a number which was not available prior to the field work. As
mentioned previously, estimates of the total number of households
within the sample cells, D(s,k,c), were available, providing an opportunity
to estimate H(s,k,c) upon completion of the field work.
The number of households included in housing unit (s,k,c,h) is
denoted D(s,k,c,h). The average number of households per housing
unit of cell (s,k,c) can be estimated from the sample data:
_ l ' d�k�
(2.3) D (s, k, c , . ) = d (s, k , c) � D (s, k, c, h)
An estimate for the total number of cell housing units is thus:
(2.4) H (s, k, c) = D (s, k, cl
D (s, k , c , . )
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