Cost analysis and cost efficiency. Cost accounting is a subset of accounting that informs about how much it has cost to do something. This is not difficult to do when there are trained staff and there is a good accounting system. It is painfully tedious and difficult when the record keeping is simplistic and critical data not available. This is a reflection of management competence and priorities.
Efficiency. With cost analysis it is possible to move on to evaluate whether or not the operations are efficient. One way of doing this is to compare what is being achieved with what should be achieved.