Final answer:
A secondary group includes professional and neighborhood associations with weak ties and less frequent interaction; these are more impersonal than primary groups.
Step-by-step explanation:
The type of group that includes organizations such as professional associations and neighborhood associations, which involve relatively weak ties and less frequent interaction among its members, is known as a secondary group. Unlike primary groups, which are characterized by close, personal and long-term relationships, secondary groups tend to be more impersonal and serve specific, often practical, purposes rather than emotional needs. Examples of secondary groups can include a classroom setting or a corporate environment where the focus is on completing tasks and achieving goals.