Final answer:
Reducing the production speed solely for the sake of accuracy without considering its overall impact is not a direct method to improve the s/q rating of branded pairs produced at a particular location.
Step-by-step explanation:
The question relates to the different methods that can be employed to improve the style/quality (s/q) rating of branded pairs in production. To answer the question, which method would not improve the s/q rating, we can look at the provided options. Increasing the quality of raw materials, implementing stricter quality control measures, and training production staff on best practices are all legitimate ways to improve the s/q rating. However, reducing the production speed is not always a way to ensure a better s/q rating, as it might lead to inefficiencies and does not directly relate to the quality of the product. Therefore, the method that would not improve the s/q rating is to reduce the production speed solely for the sake of accuracy without considering the overall impact on production processes.