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...ators" in ecological literature. Also two dimensional lines can be used as observation units (see [[line sampling]]). All in all, the response design describes wh
3 KB (408 words) - 08:59, 28 October 2013
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...titutes therefore one independent observation. This one single independent observation cannot be subdivided into more independent observations; it is just one. Th
At each one of the four sub-plots (points) the observation “1” (forest) or “0” (non-forest) is made so that for an entire clus
6 KB (963 words) - 15:18, 26 October 2013
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...r consists of a group of observation units, which together form a sampling unit (Kleinn 2007<ref name="kleinn2007">Kleinn, C. 2007. Lecture Notes for the
...on (selection of the first screw) had been done to select this observation unit of 6. In fact, most basic [[:Category:Plot design|plot designs]] as used in
15 KB (2,378 words) - 12:15, 29 January 2024
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... defined. This is also directly understandable by common sense: one single observation does not contain any information about the variability that is present in t
...he systematic sample as a sample in which the sub-plots are considered the observation plots.
15 KB (2,359 words) - 07:35, 28 October 2013
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...ample plots]] (two-dimensional observation units) or points (dimensionless observation units). Line sampling does not refer to the so-called transects which usual
Depending on the dimensionality of the observation units, different types of observations can be made on them. There are three
16 KB (2,744 words) - 14:08, 26 September 2023
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...th replacement and that on each draw the probability of selecting the i-th unit of the population is <math>p_i</math>.
Here, each observation <math>y_i</math> is weighted by the inverse of its selection probability <m
1 KB (230 words) - 12:20, 26 October 2013
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.... As the subplots are not selected independently, a cluster gives only one observation.
:[[Observation]]s are independently selected if for each observation a new (=independent) randomization was done (the selection of one sample do
17 KB (2,464 words) - 07:47, 28 October 2013
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...sh to make an extrapolation of the per-plot observation to the per hectare observation, then '''all''' related areas must refer to the same reference system, and
...[line sampling]] are used as [[Sampling design and plot design|observation unit]]), like length of roads; length of water (creeks); and length of [[Forest
10 KB (1,686 words) - 08:36, 12 March 2021
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...observation <math>y=1</math> to the <math>n_f</math> forest points and the observation <math>y=0</math> to the <math>n_n</math> non-forest points.
...sampling, or (2) only the end points are observed, so that the observation unit is actually a cluster of two points at a defined distance away from each ot
19 KB (3,034 words) - 07:42, 28 October 2013
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...odels such as [[expansion factor]] in estimating metric variables on a per unit area basis are not applicable to species richness estimation.
...l forests (see also the following chapter); it is interesting to note that observation errors such as lack of identification, or even more difficult: wrongly iden
11 KB (1,596 words) - 11:55, 26 October 2013
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...tion geometry which is determined by the technical design of the observing unit (e.g. sensor and platform) and of the observed object (e.g. Earth surface),
...e Earth. Therefore, many of the satellite systems currently used for earth observation (e.g. Landsat, Sentinel, Planet) operate in a sun-synchronous orbit as show
12 KB (1,781 words) - 11:49, 30 September 2020
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...imple example would be the estimation of forest cover by the GSG points as observation units (see [[Estimating forest area]]).
... the [[inclusion probability]] of remaining forest patches is to adapt the observation design. Sometimes also techniques like [[adaptive cluster sampling]] are ap
13 KB (1,885 words) - 07:29, 15 December 2016
