Which statement is accurate about dashboard filters?

The correct statement regarding dashboard filters is that filters cannot be applied to joined reports. When working with Salesforce dashboards, filters provide a way to dynamically adjust what data is displayed. However, one important limitation is that joined reports do not support the application of dashboard filters. This means that if a dashboard component is based on a joined report, those filters will not influence the data displayed in that component.

For context regarding the other options: Filters can indeed be applied to dashboards that include Visualforce components, meaning the first statement is not accurate since Visualforce allows for greater customization, including the use of dashboard filters. Additionally, it is accurate that filters can be used on bucket fields in a dashboard, which demonstrates the ability to summarize complex data in a simplified manner. Lastly, filters can also be applied when scheduling a dashboard, allowing users to create custom views based on specific criteria at the time the dashboard is generated, reinforcing the usefulness of filters beyond just real-time interaction.