Some examples from this set of practice questions
1.
Controls like positive and negative controls are not necessary for some experiments. True/False.
Answer: False, positive and negative control should be included in all the experiments to validate the experiment that it is done without any errors like contamination, or a dysfunctional reagent or substance. For example, if a positive control, turned out to be negative or if a negative control turned out to be positive, it will show that the whole experiment is not valid including the results.
2.
Blind study is to test a group of blind people. True/False.
Answer: False.
3.
What is double blind study?
Answer: Double blind study means that both the researcher and the participant would not know what treatment is being given. This is done to prevent bias from the researcher\'s side and improve reliability of the results.
4.
What is single blind study and it\'s purpose?
Answer: Single blind study means that the participant in the study would not know what treatment has been given to them, however the doctor or the researcher knows what treatment has been given to each participant. This single blind study is done in this way, as if the participants know what treatment has been given to them, it can affect the results or the outcome, resulting in a biased outcome. Therefore, this study is done to prevent bias.
5.
What is dependent variable?
Answer: Dependent variable depends on independent variable.
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