Final answer:
A group of causally related processes is known as a Process Network, signifying a system of interlinked processes that establish cause-and-effect relationships, crucial in computational processes and system designs.
Step-by-step explanation:
A group of causally related processes refers to a Process Network, which is a system where the processes are interconnected in such a way that the output of one process may serve as input to another, establishing a cause-and-effect relationship. In the context of computational processes and system design, a Process Network ensures that there is a flow and transformation of information or resources through a series of processes that affect each other.
Typical examples include workflows in a software system or operational processes in manufacturing where each step's completion triggers the subsequent one in the network. This concept is not to be confused with a process in which the system follows the same path for every cycle or a process in which the system follows a different path for every cycle, which pertains to the predictability and repeatability of a single process rather than the interaction among multiple processes.