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buletin statistic de industrie industry statistical bulletin nr. 5/2012

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alta şi efectului calendarului (Paştele<br />

ortodox, an bisect şi alte sărbători<br />

naţionale) precum şi i<strong>de</strong>ntificarea şi<br />

corectarea valorilor extreme (schimbări<br />

<strong>de</strong> nivel ocazionale, tranzitorii sau<br />

permanente) şi interpolarea valorilor<br />

lipsă.<br />

Seria ajustată cu numărul <strong>de</strong> zile<br />

lucrătoare s-a obţinut prin eliminarea din<br />

seria brută a acestor efecte, cu ajutorul<br />

unor coeficienţi <strong>de</strong> corecţie, stabiliţi în<br />

funcţie <strong>de</strong> mo<strong>de</strong>lul <strong>de</strong> regresie folosit<br />

(aditiv sau multiplicativ).<br />

Stabilirea mo<strong>de</strong>lelor <strong>de</strong> regresie<br />

folosite pentru fiecare serie se face la<br />

începutul fiecărui an şi implică<br />

recalcularea seriilor ajustate calculate în<br />

anul prece<strong>de</strong>nt (recalculare datorată<br />

modificării mo<strong>de</strong>lelor adoptate, numărului<br />

<strong>de</strong> regresori folosit şi numărului <strong>de</strong><br />

observaţii disponibile).<br />

Ajustarea nivelurilor agregate<br />

(secţiune, total <strong>industrie</strong>, mari grupe<br />

industriale) s-a realizat prin metoda<br />

directă care presupune ajustarea directă<br />

a seriilor agregate. Utilizarea meto<strong>de</strong>i<br />

directe poate conduce la unele<br />

inconsistenţe în seriile <strong>de</strong> date (respectiv,<br />

agregatele să nu fie cuprinse întot<strong>de</strong>una<br />

între valorile componentelor din care<br />

provin).<br />

Indicii producţiei industriale sunt<br />

provizorii şi se revizuiesc pe baza<br />

rectificărilor ce se efectuează retroactiv<br />

<strong>de</strong> către întreprin<strong>de</strong>rile din eşantion,<br />

asupra datelor furnizate anterior <strong>de</strong> către<br />

acestea.<br />

Indicele productivităţii muncii în<br />

<strong>industrie</strong><br />

Indicele productivităţii muncii în<br />

<strong>industrie</strong> este indicatorul ce<br />

caracterizează eficienţa muncii <strong>de</strong>puse<br />

într-o anumită perioadă în cadrul activităţii<br />

industriale şi se calculează ca raport între<br />

indicele brut al producţiei industriale şi<br />

indicele numărului mediu <strong>de</strong> salariaţi din<br />

<strong>industrie</strong>.<br />

Indicii productivităţii muncii în<br />

<strong>industrie</strong> sunt calculaţi pe total <strong>industrie</strong>,<br />

secţiuni (industria extractivă,<br />

prelucrătoare şi producţia şi furnizarea <strong>de</strong><br />

energie electrică şi termică, gaze, apă<br />

caldă şi aer condiţionat), diviziuni CAEN<br />

Rev.2 precum şi mari grupe industriale.<br />

Indicii lunari ai productivităţii<br />

muncii în <strong>industrie</strong> sunt provizorii şi se<br />

revizuiesc pe baza rectificărilor ce se<br />

another and calendar effect (Orthodox<br />

Easter, bissextile year and other national<br />

holidays) as well as i<strong>de</strong>ntification and<br />

correction of extreme values (occasional,<br />

transition or permanent changes) and<br />

interpolation of missing values.<br />

Adjusted series with working days<br />

number was obtained eliminating from<br />

unadjusted series those effects by means<br />

of correction coefficients, set up<br />

according to regression mo<strong>de</strong>l used<br />

(additive or multiplicative).<br />

Regression mo<strong>de</strong>ls used for each<br />

series are set up at the begining of each<br />

year, involving the recalculation of<br />

adjusted series calculated in the previous<br />

year (recalculation due to thr change of<br />

the adopted mo<strong>de</strong>ls, number of<br />

regressors used and number of available<br />

observations).<br />

Aggregated levels (section, total<br />

<strong>industry</strong>, broad industrial groups) were<br />

adjusted by means of direct method<br />

supposing direct adjustment of<br />

aggregated series. Using the direct<br />

method could lead to some<br />

inconsistencies in data series<br />

(respectively, aggregated should not be<br />

always inclu<strong>de</strong>d among the values of their<br />

origin components).<br />

The industrial production indices<br />

are provisional and are revised based on<br />

the corrections retroactively done by the<br />

enterprises in the sample, concerning the<br />

data previously provi<strong>de</strong>d.<br />

Labour productivity in<strong>de</strong>x in<br />

<strong>industry</strong><br />

Labour productivity in<strong>de</strong>x in<br />

<strong>industry</strong> is the indicator which<br />

characterizes the efficiency of work<br />

during a certain period of time of<br />

industrial activity and is calculated as<br />

ratio between the gross industrial<br />

production in<strong>de</strong>x and the in<strong>de</strong>x of<br />

average number of employees in<br />

<strong>industry</strong>.<br />

Labour productivity indices in<br />

<strong>industry</strong> are calculated per total <strong>industry</strong>,<br />

sections (mining and quarrying,<br />

manufacturing and electricity, gas,steam<br />

and air conditioning supply) and CANE<br />

Rev.2 divisions, as well as broad<br />

industrial groups.<br />

Monthly labour productivity indices<br />

in <strong>industry</strong> are provisional and they are<br />

revised on the basis of retroactive<br />

103

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