||Location (Not Relevant: No process difference with project locations. One location, Guangzhou city.)
Customer (Not Relevant: The customers of the projects are the same type. One customer type, government.)
Size (Not Relevant: No difference in practice implementation because all projects have similar size.)
Organizational Structure (Not Relevant: One organization structure. All projects are under same command chain.)
Type of Work: Projects are different as there are product maintenance and product development projects.
|Sampling Factor Values:
||Product maintenance (Type of Work): Enhancement on existing products.
Product development (Type of Work): Newly development products.
SUB1: The projects in this sub-group update with enhancement on existing products.
9 People, 1 Basic Units
– Product maintenance
SUB2: The projects in this sub-group develop new systems.
8 People, 1 Basic Units
– Product development