Final answer:
The file extension for an Alteryx workflow group is .yxwz, used to package a group of workflows and associated files for sharing or transferring.
Step-by-step explanation:
The file extension for an Alteryx workflow group is .yxwz, specifically designed to encapsulate a comprehensive set of workflows and related files for seamless sharing or transfer. This zipped file encompasses not only the primary workflow but also its associated macros, input data files, and other critical assets. When you save a project in Alteryx Designer with the .yxwz extension, it facilitates efficient collaboration and simplifies version control. This standardized packaging ensures that all necessary components are bundled together, streamlining the process of exchanging, archiving, or collaborating on complex data analytics projects within the Alteryx environment.