| Sampling Factors: |
Location (Not Relevant: Software development work is performed in only one location: Chengdu)
Customer (Not Relevant: No effect on implementation. All customers belong to education industry.)
Size (Not Relevant: No effect on implementation. All software development projects have less than 15 employees.)
Organizational Structure (Not Relevant: No effect on implementation. The projects are performed under the same structure.)
Type of Work: Some Projects used Waterfall,Some Project used Prototype+Waterfall. |
| Sampling Factor Values: |
Waterfall (Type of Work): The requirement is clear.
Prototype+Waterfall (Type of Work): The Requirement is not clear enough. |
| Subgroups: |
1: Three projects belong to the type of “Prototype+Waterfall”.
18 People, 3 Basic Units
– Prototype+Waterfall
2: Three projects belong to the type of “Waterfall”.
16 People, 3 Basic Units
– Waterfall |