Which group shows that it is not based on rules or laws and there is close relationship among members?

Informal Groups

The formation of formal groups is based on some specific rules or laws and members have definite roles. There are a set of norms which help in establishing order. A university is an example of a formal group. On the other hand, the formation of informal groups is not based on rules or laws and there is close relationship among members.

Secondary groups are those where relationships among members are more impersonal, indirect, and less frequent.