Area Sample

Area Sample

In statistics, all the possible values a random variable can take under a given set of circumstances in a geographic area, as well as the probability that it will take each value. That is, an area sample divides a large geographic area into subunits and calculates the probability that the variable will occur in each unit. An area sample is a form of probability distribution applied to geography. It is also called an area selection.
References in periodicals archive ?
The new area sample will be phased in over a 4-year period beginning in January 1987, and will contain 90 areas when fully implemented.
The Portland Study Area sample included 538 home sales: 152 treatment sales (HVTL abutting) and 386 control sales (non-HVTL abutting) located in three Portland metro-area counties--Washington County and Clackamas County in Oregon and Clark County in Washington.
2] area samples there is no significant difference between the two area sample values (F=1.
Comparison of PbTx concentration obtained from area samples taken with high-volume samplers showed that the personal samples indicated a lower exposure concentration (on the average about 50%) from those obtained from the area sample.
In general, personal sample fibre concentrations were greater than area sample fibre concentrations.
The Sales and Bargains Report (212-982-9300)--best known as the S&B Report--is a subscription-based, New York area sample sale newsletter ($49 a year).
From 1951 to 1969, according to Konschnik (3), the frame for the sample was an area sample supplemented by a small list of the largest firms.
4) A more detailed description of the current and 1998 revision area sample selection is contained in Cathryn S.
The survey polled a sample of 12,418 consumers nationwide, with a Bay Area sample size of 503, and has a margin of error for the entire sample of plus or minus one percentage point.
Beginning in 1998, the Bureau of Labor Statistics will introduce a new geographic area sample, a revised item structure, and updated expenditure weights into the Consumer Price Index (CPI).