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The key difference between experimental and observational study is that an experimental study is a study where the researcher has control over most of the variables. On the other hand, an observation study is a study where the researcher merely observes the subject without controlling any variables.
Empirical studies are the collection and analysis of primary data based on direct observation or experiences in the âfieldâ. There are a variety of study types that can be employed when conducting an empirical study, including: Descriptive or observational studies, thatâ¦. Provides data on what is going on. Emphasises features of a new condition/phenomenon, or. Describes the current status of existing condition/phenomenon.