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Sagot :
Answer:
Observation
Explanation:
An observational study can be defined as a type of study in which a researcher observes and measures the effect of a diagnostic test, risk factors, or treatments on individuals without intervening, changing or manipulating who are or aren't exposed to it (controlled conditions).
Basically, observation is a research method that involves examining a given population in order to gather certain informations about them. Thus, it is typically aimed at observing the activities that are being performed by a population of interest.
The form of primary data collection that is being used by the company is observation because it is setting up video cameras in a mock-convenience store to watch the study participants during the purchasing process
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