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kherson [118]
3 years ago
5

4. Distinguish between the types of scientific

Biology
1 answer:
KonstantinChe [14]3 years ago
3 0

Answer: Descriptive, Comparative and Experimental (which comes from experimentation).

Explanation:

There are three types of scientific investigations:

  • Descriptive: This type of scientific investigation studies parts of a system, which can be natural or artificial. <u>It describes everything that is being studied and no predictions are made</u>. There are three types of descriptive methods: case-study methods (an in-depth study is produced from many sources with different methods), observational methods (no questions asked, just an observation of the behavior of a subject and no manipulation of the variables), and survey method (some people are interviewed and the researchers study the answers.)

  • Comparative: <u>It gathers information from organisms, systems, places or from any source, to compare them</u> using also a control group. But, there is no imposed treatment because it is not ethical or because it is not possible. So, the treatment is only observed.

  • Experiment: As its names says, <u>it uses an experimental test designed to study some phenomena, where variables are controlled</u> so the treatment is not only observed as the comparative method. Then those variables are measured to collect information or evidence that supports or not a previous hypothesis and is used to assess theoretical knowledge. The independent variable is manipulated while the dependent variable is measured. This type of scientific investigation comes from experimentation.
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