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Buletin Statistic Lunar - Nr. 4/2013 - Institutul National de Statistica

Buletin Statistic Lunar - Nr. 4/2013 - Institutul National de Statistica

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Stabilirea mo<strong>de</strong>lelor <strong>de</strong> regresie folosite pentru fiecareserie se face la începutul fiecărui an şi implicărecalcularea seriilor ajustate calculate în anul prece<strong>de</strong>nt(recalculare datorată modificării mo<strong>de</strong>lelor adoptate,numărului <strong>de</strong> regresori folosit şi numărului <strong>de</strong> observaţiidisponibile).Ajustarea nivelurilor agregate s-a realizat prin metodadirectă care presupune ajustarea directă a seriiloragregate. Utilizarea meto<strong>de</strong>i directe poate conduce launele inconsistenţe în seriile <strong>de</strong> date (respectiv,agregatele să nu fie cuprinse întot<strong>de</strong>una între valorilecomponentelor din care provin).Estimarea componentelor neobservate: trend-ciclu,sezonalitate şi componenta neregulată se realizează <strong>de</strong>către programul SEATS pe baza mo<strong>de</strong>lelor ARIMA.Seria ajustată <strong>de</strong> efectul zilelor lucrătoare şi <strong>de</strong>sezonalitate se obţine prin eliminarea componenteisezoniere din seria ajustată <strong>de</strong> efectul zilelor lucrătoare.Regression mo<strong>de</strong>ls used for each series are set up atthe beginning of each year involving the recalculation ofadjusted series calculated in the previous year(recalculation due to the change in the adopted mo<strong>de</strong>ls,number of regressors used and number of availableobservations).Aggregated levels were adjusted by the direct methodsupposing the direct adjustment of aggregated series.The use of the direct method could lead to someinconsistencies in data series (respectively, aggregatesshould not always range between the values of origincomponents).Unobserved components: trend-cycle, seasonality andirregular components are estimated by means of theSEATS program based on ARIMA mo<strong>de</strong>ls.The series adjusted with working days effect andseasonality is obtained by eliminating seasonalcomponent from the series adjusted with working dayseffect.COMERŢ INTERNAŢIONAL CU BUNURIINTERNATIONAL TRADE IN GOODS<strong>Statistic</strong>ile <strong>de</strong> comerţ internaţional cu bunuri sestabilesc prin însumarea datelor din sistemeleINTRASTAT şi EXTRASTAT:- sistemul INTRASTAT: pentru comerţul intra-UE(schimburile <strong>de</strong> bunuri între România şi celelaltestate membre ale Uniunii Europene)- sistemul EXTRASTAT: pentru comerţul extra-UE(schimburile <strong>de</strong> bunuri între România şi statelecare nu sunt membre ale Uniunii Europene).• Sfera <strong>de</strong> cuprin<strong>de</strong>re:Pentru comerţul intra-UE: se cuprind expedierile <strong>de</strong>bunuri din România cu <strong>de</strong>stinaţia alt stat membru UE şiintroducerile <strong>de</strong> bunuri în România provenind din altstat membru UE.Expedierile din România includ:- bunuri în liberă circulaţie care părăsesc teritoriulstatistic al României cu <strong>de</strong>stinaţia alt stat membruUE;- bunuri care au fost plasate sub procedura vamală <strong>de</strong>prelucrare activă (în interiorul ţării) sau prelucraresub control vamal în România şi care sunt <strong>de</strong>stinatealtor state membre.Introducerile în România includ:- bunuri în liberă circulaţie într-un stat membru UEcare intră pe teritoriul statistic al României;- bunuri care au fost plasate sub procedura vamală <strong>de</strong>prelucrare activă sau prelucrare sub control vamal înalt stat membru UE şi care intră pe teritoriul statistical României.Pentru comerţul extra-UE: se cuprind schimburile <strong>de</strong>bunuri între România şi statele nemembre UE, avândca obiect: importul direct <strong>de</strong> bunuri pentru consum,bunurile importate scoase din antrepozitele vamale sau<strong>Statistic</strong>s of international tra<strong>de</strong> in goods are set up bysumming up the data from INTRASTAT andEXTRASTAT systems:- INTRASTAT system: for intra EU tra<strong>de</strong>(exchanges of goods between Romania and theother member states of European Union)- EXTRASTAT system: for extra EU tra<strong>de</strong>(exchanges of goods between Romania and thenon-member states of European Union).• Coverage:Intra EU tra<strong>de</strong> inclu<strong>de</strong>s dispatches of goods fromRomania with the <strong>de</strong>stination of another EU memberstate and arrivals of goods in Romania coming fromanother EU member state.Dispatches from Romania inclu<strong>de</strong>:- free circulation goods leaving the statistical territoryof Romania with the <strong>de</strong>stination of another EUmember state;- goods placed un<strong>de</strong>r customs procedure of inwardprocessing (insi<strong>de</strong> the country) or processing un<strong>de</strong>rcustoms control in Romania and are meant for othermember states.Arrivals in Romania inclu<strong>de</strong>:- free circulation goods in one EU member stateentering the statistical territory of Romania;- goods placed un<strong>de</strong>r customs procedure of inwardprocessing or processing un<strong>de</strong>r customs control inanother EU member state and which enter thestatistical territory of Romania.Extra UE tra<strong>de</strong> inclu<strong>de</strong>s exchanges of goods betweenRomania and EU non-member states having as objectdirect import of goods for consumption, imported goodstaken out from customs warehouses or free zones to be184

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