Requirement Stability Index (RSI) is used to
measure the changes in the business requirement added or deleted compared to
the original requirements decided at the start of the project.
How to calculate the Requirement Stability
Index:
Requirement Stability Index = (Total number of original business requirements + Number of requirements changed till date+ Number of requirements added + Number of requirements deleted) / (total number of original requirements)
Requirement Stability Index = (Total number of original business requirements + Number of requirements changed till date+ Number of requirements added + Number of requirements deleted) / (total number of original requirements)
E.g.
No. of Original Requirements
|
No. of Requirements Changed
|
No. of Requirements Added
|
No. of Requirements Deleted
|
Requirement Stability Index
|
100
|
15
|
5
|
5
|
1.25
|
Requirement Stability Index = (100+15+5+5)/100
=1.25
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