Biology, 07.04.2020 15:33 meramera50

Experiments groups are divided into two groups which are

a. Control group and independent group
b. Control group and treatment group
c. Treatment group and dependent group
d. Experimental group and treatment group

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Answer from: culbertchristi6111

The correct answer is:

Control group and treatment group (b.)

Explanation:

Scientific experiments seek to investigate the association between two variables (independent and dependent). There are various variants of scientific research, but the one described here is the "case control study".

In case control studies, the research subjects are divided into two groups; the experimental groups and the control groups.

The experimental group are the individuals that are exposed to a certain variable (independent variable) or intervention, and they are observed for certain outcomes that are brought about as a result of the exposure.

The control group are the individuals that have approximately the same properties and exposures to the experimental groups except exposure to the independent variable or intervention. The control groups are there to ensure that of a certainty, the observations made on the experimental groups are as a result of the independent variable alone and not other variables. For example in a hypothetical study to determine the impact of a certain skincare product on skin color, the experimental groups are exposed to the product (independent variable) while another set of individuals of same age range, gender etc as the experimental individuals are exposed to every other factor as the experimental group except to the skin care product, this is so that if there is a significant effect on the skin tone of the experimental group but not the control group, it can be said to a scientific degree of accuracy that the change observed was as a result of the skincare product.

Answer from: Quest

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Answer from: Quest

It depends on the surface of the levels. the rougher the surface, the greater is the frictional force. for rougher surfaces, you would need to exert greater force to move the object. the concept is that, you must overcome the frictional force in order to bring the object into motion. this is the reason why we add lubricants to the joints so they could easily move. this answer was on

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Experiments groups are divided into two groups which are

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