Performance indicators has become important since the management philosophy of total quality was established. They are management tools which provide a reference value for carrying out measurements. In this paper different points of view are analyzed in relation to its nature and utility. The objective-subjective character of performance indicators is discussed, and the difference is pointed out according to statistics. This type of indicators is also analyzed as a useful tool in the process of evaluation and its methodology of construction.
Performance indicators; Evaluation; Quality management; Performance measurement; Library statistics; Nature of performance; Libraries