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	changes in time by means of individual indexes and determine trend both by mechanical and analytical method. •    The student receives a good mark - if he can also assess the concentration (flattening), is able to characterize the types of concepts related to empirical distributions of economic and social variables, can evaluate the fit of the regression / trend (including exponential) to empirical data and is able to characterize the growth of values of heterogeneous baskets including price increases and consumption, describe seasonal variations, both by mechanical and analytical method. •    The student receives a very good mark - if also knows the properties of statistics being used, correctly uses the concepts and sets the harmonie and chronological mean, can define the concepts of coexistence theory, can explain the theoretical basis of the method of least squares, properly use measures of coexistence in collectives characterized in many dimensions, and understand the methodology of estimating inflation in Poland.
Basic bibliography	Bąk 1., Markowicz 1., Mojsiewicz M., Wawrzyniak K.: Statystyka w zadaniach. Cz. i. Wydawnictwo Naukowo-Techniczne, Warszawa 2002. Bąk 1., Markowicz 1., Mojsiewicz M., Wawrzyniak K.: Wzory i tablice statystyczne. Katedra Ekonometrii i Statystyki Uniwersytetu Szczecińskiego. Stowarzyszenie Pomoc i Rozwój, Szczecin 1997. Hozer J., Korol M., Korol J., Talaga L., Witek M.: Statystyka. Opis statystyczny. Stowarzyszenie Pomoc i Rozwój, Szczecin 1996.
Additional bibliography	Zając K.: Zarys metod statystycznych, PWE, Warszawa 1994. ZeliaśA.: Metody statystyczne, PWE, Warszawa GUS publications: Statistical yearbooks, monthly information on the economic situation of the country, monthly information on price developments in the national economy, other methodological publications.
ECTS	I