We use samples to perform experiments. When sampling, we take test subjects from a larger group often known as "population" or at times "universe".

Sampling is a term we use to describe the process of selecting a small representitive group from a larger population. Sampling can often be divided in its simplest form into:

Random Samples
Non-Random Samples.

Which as their names imply, represent first a sample that is chosen by not specific method and whose probability is equal for the entire population, and secondly a sample chosen based on specific parameters.

Sampling can then become more complex, being divided into more complex methods such as:

Systematic sampling
Stratified sampling
Cluster sampling

etc.

The one thing all of the sampling methods have in common is the fact that they will all draw their samples from one place. This place or aspect from which samples are drawn is known as the population group or sometimes coined as the universe, to represent the group in its entirety.

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8 0

3 years ago

Summary about food chain

EleoNora [17]

The food chain is a system in which food is connected with the ecosystem. Ex:composers, producers, decomposers,etc.

6 0

3 years ago

Read 2 more answers

Suppose a mutation occurs in an individual animal. What do you think would happen if the mutation had these different effects on

Nady [450]

Answer:

For effect #1, the mutation will become more common (A). This is because with the organism having more children, the trait will be passed around much faster and will spread to surrounding groups of animals.

For effect #2, the mutation will become more common (A). This is because the disease will kill the animals who do not carry the gene leaving only the animals with the trait, making it much more common

For effet #3, the mutation will disappear (B). This is because the animal carrying the gene will slowly die off. After all, they will not be able to reproduce and pass the gene to their children.

For effect #4, the mutation will remain at a low level (C). This happens because since it procures no change there will be no reason to transfer it so it will become a recessive trait in the animals.

Explanation:

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2 years ago