The study that analyzed the sexual networks of teens at 12 high schools is an example of how network analysis can inform transmission phenomena, such as the spread of sexually transmitted infections (STIs). An advantage of network analysis over interpretive sociology is that it can:

An advantage of network analysis over interpretive sociology is that it can: reveal patterns in social structures that might not become evident through answers to direct questions.

Explanation:

can you explain it better

an informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.