1. The statistical indicators are elaborated data (or information) that among their qualities have the one to be potential reducers of uncertainty at the disposal of those (politicians, public administrators, operators, citizens, etc.) who will insert them in a process of communication

2. Support and instruction for the choices and policies of the Government
Support of the management
Offer of meaningful contents for the social communication
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3. SIGNIFICANCE RELEVANCE ARTICULATION EFFICIENCY
FULFIL THE COGNITIVE AIMS
RELEVANCE
INFORMATIVE EFFECTIVENESS
ARTICULATION
PRESENCE OF VARIEGATED ASPECTS OF THE INQUIRED REALITY
EFFICIENCY
SELECTIVITY RELATIONSHIP BETWEEN RELEVANT AND IRRELEVANT INFORMATION

4. FREQUENCY TIMELINESS REGULARITY WITH WHICH THE INFORMATION IS PROVIDED
PERIOD BETWEEN THE REQUEST AND THE AVAILABILITY OF INFORMATION

5. The simple relative frequency (relationship of composition)
The quotients between the densities of a same variable in different periods of analysis (numeric index)
The relationship between the emerging data and the dimension of space or period of time (density relationship)
For example: density of the population: relationship between the population of a region and her extension
The simple relative frequency (relationship of composition)
For example: percentage of children between 0 and 17 years on the entire population