At the moment, the average velocity bar, in the Velocity Chart report, is only available for Jira Server and Datacenter.

It would be good if we also have the velocity bar for Jira Cloud. 

When comparing the documents from server and cloud we can see this feature is not available in the cloud.

• Server: https://confluence.atlassian.com/jirasoftwareserver/velocity-chart-938845700.html
• Cloud: https://support.atlassian.com/jira-software-cloud/docs/view-and-understand-the-velocity-chart/