Answer:
b
Explanation:
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Answer:
An Independent or Test Variable is A variable that is often represented by X whose variation does not depend on another
A Dependent or Outcome Variable is the variable being measured or tested in an experiment
The Control Group is the group in an experiment or study that does not recieve treatment
Independent variables changes they are usaully the factors you control and manipulate
Dependent variables changes
The control group does not change
Explanation:
Hope this helps
Answer:
x = 5AB = 5 inchesBC = 15
Explanation:
trust
Answer:
The correct option is;
D) Observational study
Explanation:
In an observational study, the researcher observes, notes and record the an occurrence of events which are due to the existence of a condition, test, risk factor, such that the experimental units are apparently out of the control of the researcher, or there are no researcher intervention in the study, due to either physical constraint or laid down ethics.
In the question, the researcher observes to determine the the number of people that run a light through pre recorded traffic video providing a physical restraint which makes it an observational study.
