Identify the type of observational study (cross-sectional, retrospective, or prospective) described below. A research company
uses a device to record the viewing habits of about 15,000 households, and the data collected over the next 7 years will be used to determine nbsp whether nbsp the proportion of households tuned to a particular sports program nbsp decreases. Which type of observational study is described in the problem statement?a. A prospectiveprospective studyb. A cross-sectional studyc. A retrospectiveretrospective study
Observational studies include the observation of the effects of risk factors, diagnostic examinations, treatment or other intervention by the researchers in order to measure certain outcomes.
A cross-sectional study also known as transverse study or prevalence study is a sub-branch of observational study that involves the analysis of data(cross-sectional data) from the population or a representative subset at a precise point of time. Thus, <em>the problem statement provided here illustrates the cross-sectional study as it observes and analyzes cross-sectional data. </em>
While many might say the fridge needs to be opened first to prepare breakfast, note that it does not say that the parents are in the house, and therefore they would need to be let in. Hence the answer of what to open first would be "the door".
