An area sampling frame is an alternative to the most traditional type of sampling frames.
A sampling frame is often defined as a list of elements of the population we want to explore through a sample survey. A slightly more general concept considers that a sampling frame is a tool that allows the identification and access to the elements of the population, even if an explicit list does not exist.[1] Traditional sampling frames are sometimes referred to as list frames[2][3]
In many cases, suitable lists are not available. This can happen for several reasons, for example:
Existing lists, such as population censuses, are too old and do not correspond anymore to the current reality.
We are targeting a population whose list is not feasible, for example a wild animal species.
The population is a continuous feature in a given geographic area and the definition of its elements is not straightforward. This often happens for sample surveys designed to produce environmental statistics.
Area sampling frames are generally defined by two elements:
The boundaries of a target region in a given cartographic projection.
The type of geographic units to be sampled. We can mention three main types of units:
Points. In principle, points are dimensionless, but, for practical reasons, we can attribute them a certain size, such as 1 m x 1 m. The suitable size is linked to the accuracy of the tool used for the location of the point. Possible tools are GPS devices, orthophotos or satellite images. Point sampling can be based on a two-stage scheme, sampling clusters in the first stage and sampling points in the second stage. Another option is a two-phase scheme of unclustered points: a large first-phase sample is selected. A stratification is conducted only for the first-phase sample and a stratified sample is chosen in the second phase.
Transects. A transect is a piece of straight line of a given length. Transect sampling is useful to estimate the total length of linear landscape elements
Areal units defined by polygons. In the jargon of agricultural surveys, areal units are generally called "segments",[4] even if a segment in geometry rather corresponds to the concept of transect used in area sampling frames. Segments can be delineated by photo-interpretation or generated automatically, usually on the basis of a regular grid.[1] The optimal size of segments depends on the spatial auto-correlation of the monitored processes and the cost function that links the price of data collection with the size of the sample unit[5]
^ ab"Handbook on Master Sampling Frames for Agricultural Statistics". docplayer.net. Retrieved 2023-12-11.
^Turner, Anthony G. (5 December 2003). "Sampling frames and master samples" (PDF). Millenium development goals indicators. Retrieved January 6, 2024.
^Carfagna, Elisabetta (2015). "Combining list frames with different kinds of area frame" (PDF). International Statistical Institute, 60th ISI World Statistics Congress Proceedings. Retrieved January 6, 2024.
^Boryan, Claire; Yang, Zhengwei; Di, Liping; Hunt, Kevin (November 2014). "A New Automatic Stratification Method for U.S. Agricultural Area Sampling Frame Construction Based on the Cropland Data Layer". IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. 7 (11): 4317–4327. Bibcode:2014IJSTA...7.4317B. doi:10.1109/JSTARS.2014.2322584. ISSN 1939-1404. S2CID 11727236.
^Gallego, Francisco Javier (2012-03-20). "The efficiency of sampling very high resolution images for area estimation in the European Union". International Journal of Remote Sensing. 33 (6): 1868–1880. Bibcode:2012IJRS...33.1868G. doi:10.1080/01431161.2011.602993. ISSN 0143-1161. S2CID 128680455.
and 22 Related for: Area sampling frame information
An areasamplingframe is an alternative to the most traditional type of sampling frames. A samplingframe is often defined as a list of elements of the...
systematic sampling is a statistical method involving the selection of elements from an ordered samplingframe. The most common form of systematic sampling is...
In statistics, cluster sampling is a sampling plan used when mutually homogeneous yet internally heterogeneous groupings are evident in a statistical population...
Deep learning super sampling (DLSS) is a family of real-time deep learning image enhancement and upscaling technologies developed by Nvidia that are exclusive...
probability sample of the household population in the United States are Area Probability Sampling, Random Digit Dial telephone sampling, and more recently...
random sampling is a basic type of sampling and can be a component of other more complex sampling methods. The principle of simple random sampling is that...
probabilistic sample selected on an areasamplingframe. Traditional survey methodology provides different methods to combine accurate information on a sample with...
suitable for sampling or observing plants, slow-moving animals, and some aquatic organisms. A photo-quadrat is a photographic record of the areaframed by a quadrat...
frame, in differential geometry Frame bundle, a principal fiber bundle associated with any vector bundle Frames and locales, in order theory Sampling...
regular-time samples of the call stack can be useful in profiling the performance of programs as if a subroutine's pointer appears on the call stack sampling data...
texture than sampling all texels in the original texture that would contribute to a screen pixel; it is faster to take a constant number of samples from the...
In filmmaking, video production, animation, and related fields, a frame is one of the many still images which compose the complete moving picture. The...
a frame rate of 30000/1001 (roughly 29.97) frames per second like NTSC, with color encoded using a YCbCr representation with 4:2:0 color sampling. It...
than 160 kbit/s. By lowering the sampling rate, MPEG-2 layer III removes all frequencies above half the new sampling rate that may have been present in...
air sampling. Surface sampling measures the number of mold spores deposited on indoor surfaces. With swab, a cotton swab is rubbed across the area being...
above. Spatial aliasing. Vertically adjacent pixels are sampled in violation of the sampling theorem, when the camera or object motion is too rapid. One...
phones into the RDD samplingframe), number portability, and VoIP have begun to decrease the ability for RDD to target specific areas within a country and...
rectangular area somewhere on the user's display screen. A window which acts as a child of the primary window. It will be decorated with the standard frame and...
Wellington who discovered samples of significance (refer below) during an expedition to the area, 1964–65. 1): Alexander Oswald Frame as palaeontology technician...
Global Information