Sampling is the process of s<u>electing individuals or smaller groups from a larger population</u> to act as <u>representatives of that population.</u> This is used to make statistical assumptions and infer the traits of the population as a whole.
Sampling techniques can be divided into many categories and subcategories. There are four main forms of sampling, which include:
- Simple random sampling.
- Systematic sampling
- Stratified sampling
- Cluster sampling
Each of these can then be divided further.
Sampling techniques can sometimes be random, <u>intended to avoid biased choices that benefit the achievement of the desired result</u> and therefore render the conclusion inaccurate. This is the biggest weakness in sampling methods. Errors in sampling can lead to <u>false assumptions and misleading data. </u>
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Answer:
Skin = Epithelial tissue
Bark of tree = Cork
Bone = Connective tissue
Lining of kidney tubule = Simple cuboidal epithelium
Vascular bundle = Xylem and Phloem
Answer:
True
Explanation:
Magma is just heated rock from the center of the Earth.
<span> It isn't if you're good with the microscope.
But as far as beginners go, it makes things easier. You have a large
"field of view" with the small objective (low power). This means you can
get it in focus and center the specimen. When you switch to the high
objective (high power) then your specimen will already be partly in
focus and centered. If you didn't center it with the low objective you
would have a difficult time trying to find it since it wouldn't be lined
up and completely out of focus.
Binoculars work with the same principle. You don't look down at the
ground with the binoculars then swing them up to the sky and try to find
a bird. You look at the bird then you put the binoculars up to your
eyes, already looking.
Good luck and have fun! </span>