Final answer:
The most effective meeting format to analyze the effectiveness of a product or service is a focus group. This format enables in-depth discussions and diverse feedback, which are crucial for a comprehensive analysis. Group brainstorming is also helpful for quickly gathering various ideas and refining them.
Step-by-step explanation:
To analyze the effectiveness of a product or service, the most suitable meeting format would be a focus group. A focus group allows for in-depth discussions and feedback on the product or service from a diverse set of users. This format effectively captures diverse viewpoints and experiences, which can provide valuable insights into the product's strengths and weaknesses, user satisfaction, and potential improvements.
Another useful technique can be group brainstorming, where participants generate a wide range of ideas and feedback collectively. It's an informal way of gathering different perspectives quickly. In this setting, it's beneficial to list all the possible ideas on paper, categorize them, and then narrow down the focus to the most critical points for an efficient analysis.