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earned value chart
subject			fact

earned value chart	can be used to measure the extent to which a project is behind schedule by measuring the horizontal distance between the earned value curve and the budgeted cost of work scheduled
	can be used to measure the extent to which you a project is over budget by measuring the vertical distance between the earned value curve and the actual cost curve
	has definition A diagram used in project tracking, that allows you to compute the amount by which you are behind schedule and over budget; it shows elapsed time on one axis, and effort expended on the other axis
	has curves The budgeted cost of work scheduled The earned value The actual cost of the work performed so far
	is useful for tracking
	is a subtopic of 11.5 - Project Scheduling and Tracking
	is a kind of diagram
diagram	has advantages it conveys or summarizes complex concepts or mechanisms more easily than other techniques
	has problems can be hard for users to interact with or interpret not usable by blind people it can be expensive to program diagram drawing software
	should have a label if its meaning is not obvious, using a caption or pop-up label that appears when the user moves the mouse over it