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Let us consider how the data is defined based on an example.

STORY POINTS COMMITTED (dark blue bar): All story points on items in sprint at the date of sprint start are counted (not the press of the button to make the sprint active). It is vital to set the correct date & time for sprint start - to start only after your sprint planning session. 

STORY POINTS ADDED (blue bar): Any story points on items added to sprint after the sprint start date will be counted in this bar.

STORY POINTS CHANGE (light blue bar): Any change in story points to stories that were committed in sprint will be counted in this bar. The bar can be positive (showing on top of the COMMITTED + ADDED), or negative (showing below the 0 Y-axis).

STORY POINTS AT CLOSING (green bar): All story points with a status category "done" in sprint at the date of sprint end are counted. It is vital to close your stories before the end of your sprint, and not later.

PREDICTABILITY (orange line): STORY POINTS COMMITTED and STORY POINTS AT CLOSING are compared. If they are equal, Predictability is 100%. If they are not equal, Predictability drops by the difference.

SPRINT ISSUES ADDED (red line): The amount of stories added to sprint after the sprint start date are counted. These are disturbances, while are likely detrimental to STORY POINTS AT CLOSING.

STORY POINTS FORECAST (turquoise bar): Any story points on items in future sprints are counted in this bar, showing the preparedness of the team for the future.

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