Unit SOCIAL STATISTICS

Course
Investigation and security sciences
Study-unit Code
40520406
Curriculum
In all curricula
Teacher
Maurizio Pertichetti
Teachers
  • Maurizio Pertichetti
Hours
  • 36 ore - Maurizio Pertichetti
CFU
6
Course Regulation
Coorte 2019
Offered
2021/22
Learning activities
Caratterizzante
Area
Discipline economico-statistiche
Academic discipline
SECS-S/05
Type of study-unit
Obbligatorio (Required)
Type of learning activities
Attività formativa monodisciplinare
Language of instruction
Italian
Contents
The purpose of this teaching is to provide students with the knowledge of the fundamentals and methodology of the Statistical discipline necessary to give the students themselves the acquisition of the skills and ability to independently apply the technique in correspondence with professional situations for which it is recourse to this discipline is necessary. In this path, the teaching will be proposed taking care to develop in the students an interest in Statistics and to facilitate them in the acquisition of knowledge in its "integrity" using a more practical approach, obtained by resizing the considerable obstacle represented by the apparatus. mathematician and formalistic that supports the treatment of this discipline. This condition actually makes the study of Statistics encouraging even in those who are not familiar with Mathematical Analysis (derivatives, integrals, etc.).
Reference texts
"The course uses 13 booklets made by the teacher as teaching material. This didactic material must be considered sufficient both for those who will be able to attend the lessons, and for the preparation of working students not in a position to attend the lessons.
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Educational objectives
With the actual learning of the contents, the students, at the end of the course, having acquired the necessary knowledge and the consequent skills, will have to consider themselves in possession of the ability to know how to read and interpret the main economic and social evaluation indicators elaborated by the official sources on the situation of the country and the rest of the world as well as being able themselves to produce them, to investigate and adequately represent the phenomena under study by establishing and measuring the possible existence of statistical relationships of dependence or interdependence, to plan and conduct in autonomy in carrying out sample statistical surveys.
Prerequisites
Possession of the elementary basic knowledge of mathematics, algebra, combinatorial calculus, plane geometry.
Teaching methods
Frontal lessons with slides. There are exercises during the lessons and a self-assessment test near the end of the course.
Other information
Compulsory attendance, except for working students. Support activities for students, on site by reservation, through group teaching sessions supplementing the conventional method. Reception activities, always by appointment, even in the case of individual students, especially if workers. For information on support services for students with disabilities and / or SLD, visit the page http://www.unipg.it/disabilita-e-dsa.
Learning verification modality
The exam, which has always been written (except for the crossing of contingency periods), is divided into 5 theory questions with closed answers and 6 calculation exercises. The type and scope of the questions and exercises that are proposed are derived exclusively from the didactic material used for the course, or from the content of the 13 booklets created by the teacher. The student has 90 minutes to take the exam. As for the frequency, the reference is that of the Exam calendar of the CdL. With regard to the registration of the evaluation, it is an Appeal with single minutes.
Extended program
"• Statistical methodology and data classification. Total statistical surveys (censuses) and sample surveys. The simple and double statistical distributions. The character, the scales, the modality, the frequency. Series and seriations. Examples of statistical tables of various contents.
• Graphical representations of the data. Diagrams in Cartesian coordinates, histograms, bar and circular diagrams, the pyramid of the ages.
• Statistical indicators. Rates, quotients, main statistical relationships (composition, coexistence, derivation, density), index numbers with fixed and mobile base. Examples and calculation tests."












• Measures of central tendency and inequality. Central values: analytical and position averages. Definitions, properties. Calculation examples. Concept of inequality, indices and their characteristics. The range of variation. The average deviations. The variance, the standard deviation, the deviance. The coefficient of variation. The Gini heterogeneity index. Concentration: concept, Gini concentration ratio, Lorenz curve. Examples and calculation tests.









• Theory of statistical relations. The connection. Conceptual plant. The construction of the theoretical and contingency frequency tables. Chi-square index and Cramer's normalized index. Examples and calculation tests. Regression and correlation. Conceptual plant. Regression analysis (in particular the linear one). Recall of concepts of analytic geometry. The regression line and the Cartesian plane. The least squares method. The linear determination index. The correlation and the linear correlation coefficient of Bravais-Pearson. Examples and calculation tests.











• Elements of sample technique. The concept of representativeness. The sampling plan. The size of the sample and the methods of extraction. Probabilistic and non-probabilistic samples. Simple random sampling and simple systematic sampling. Multi-stage stratified sampling in clusters. Sampling by reasoned choice and by quotas. Determination of the sample universes. The sampling distribution of the means and the central limit theorem.









• Elements of demographics. Censuses and survey units. Population from a static and dynamic point of view. Present and resident population. The structure by gender, age and marital status. The population from a dynamic point of view: birth and fertility, mortality, migratory movements. Concepts and definitions. The main ratios, indices / rates, for the measurement of the aggregates. Movement and population calculation. Official demographic statistics of the country.









"• Job market. The main aggregates used in labor statistics and their measurement. Active, non-active population, employment and unemployment. Concepts, definitions and relative indices (rates). Official country job statistics.
• Methodological aspects for carrying out statistical surveys."
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