Final answer:
The default value of the ratio of developers to business analysts is not mentioned in the book. However, a common ratio is 2:1 or 3:1 in organizations.
Step-by-step explanation:
In the book "Software Requirements Third Edition" by Karl Wiegers and Joy Beatty, the default value of a typical ratio of developers to business analysts is not explicitly mentioned. The authors emphasize that the appropriate ratio depends on factors like project size, complexity, and team dynamics.
However, it is common for organizations to have a ratio of 2:1 or 3:1, with two or three developers for every business analyst. This allows for effective collaboration, communication, and efficient allocation of resources.
Ultimately, the ratio of developers to business analysts should be determined based on the specific needs and requirements of the project and the organization.