The number of individual people represented in the person data set as indicated by the person_if is; 9 individuals.
The number of contacts made with people from family 3 as in the task content is; 3 contacts, namely, G, H and I.
How many individual people are represented in the person dataset?
As evident in the task content, we are expected to access the table and evaluate the data representation in order to draw inferences from observation.
The person_id column assigns an alphabet to each individual.
Hence, the total number of individuals represented in the person data set is; 9 individuals.
Also, since only persons G, H and I are evaluated in family 3, it follows that the total number of individuals checked in family 3 is; 3.
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