A new team is starting to use Jira and asks you how Jira handles various scenarios with respect to estimation and time tracking. INCORRECT! Issues can be estimated and estimated can be changed even after a sprint has started but this will be considered scope change and will be reflected on agile reports. INCORRECT! The Estimation Statistic can be changed at any time, but the data displayed in various agile reports will change as a result. CORRECT! You can choose a custom field of type Number Field to be the Estimation Statistic on a scrum board. INCORRECT! The velocity chart can be based on any of the Estimation Statistics . CORRECT! For time tracking, you can choose either of the two options, “None“ means that issues will burn down the Estimation Statistic value upon completion. . “Remaining Estimate“ and “Time spent“ means you can track time against issues using Jiras remaining estimate and time spent fields.