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Example 1 and 2
In Example 1 (Blood Plasma as Ebola Treatment), the study is O longitudinal (retrospective) longitudinal (prospective) O cross-sectional D Question 6 1 pts In Example 2 (Teens Smoking), the study (referring to the current survey) O cross-sectional O longitudinal (retrospective longitudinal (prospective)
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Q.5. Example 1 (Blood plasma as Ebola treatment) is a longitudinal

(retrospective study).

* In this study the researcher investigate capability of blood plasma

   of the people who survived Ebola to effectively manage or treat the

   Ebola disease.

* So the study conducted from effect to cause(retrospective) and it

   involves observation of people over a particular period (longitudinal)

   of time.

Q.6. Example 2 (Teens smoking),the study (referring to the current survey)

        is a Cross-sectional study.

      * Here researcher investigate a phenomenon (teen smoking) only at one

        point (referring to current survey) in time.

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