What are the principles of a good dashboard?

A good dashboard should be:

• Informative and relevant: display key metrics important for the user's goals.
• Simple and understandable: avoid information overload, use visualizations that are easy to interpret.
• Up-to-date: data should be refreshed timely to reflect the current situation.
• Structured: logically group information, highlight priority indicators.
• Interactive (if necessary): ability to filter, drill down data for in-depth analysis.

For example, a product manager's dashboard may include metrics on user engagement, conversion, and revenue, displayed as charts and tables with the option to select a time period.