Vinnumarkaður - 15.12.2002, Side 212

Vinnumarkaður - 15.12.2002, Side 212
210 Greinargerð um aðferðir og hugtök vinnutímaspumingum er mismikið eftir starfsstéttum hafa svörin verið bætt með því að setja inn reiknuð gildi. I stað óþekkts svars er sett líklegasta tölugildi sem fundið er með aðhvarfsgreiningu eftir kyni, starfshlutfalli og starfsstétt. Með þessu móti ætti að fást betra mat á meðalvinnutíma. 10.1.5 Vogir, mat á stœrðum og ársmeðaltöl Að baki ársmeðaltölum liggja báðar kannanir ársins. Allar heildarstærðir og hlutfallsskiptingar em metnar með því að vega hvert svar. Vogir em fengnar með eftirfarandi hlutfalli: 1 Njq 2nkam+n*kam Hlutfall 10.1 þar sem 7V = meðalmannfjöldi á aldrinum 16-74 ára n = fjöldi svarenda n* = fjöldi í úrtakinu með lögheimili á Islandi en aðsetur erlendis k = kyn a = aldurshópur {16, 17, 18-19, 20-24, 25-29, .., 65-69, 70-73, 74 ára1} og m = könnun {apríl, nóvember}. hours, and since the frequency of nomesponse to the ques- tions on working hours differs by occupation, answers have been supplemented by inserting imputed values. Where an answer is unknown, the most probable numerical value is entered, found by regression analysis in regard to sex, percentage of a full-time position and occupation, which should provide a better estimate of average working hours. 10.1.5. Weighting, estimating totals and figuring annual averages Annual averages are based on both of the year’s surveys. All totals and percentages are estimated by weighting each answer. Weights are calculated by the following proportion: 1 N* ^ nkam + n kam Proportion 10.1 where N = mean population aged 16-74 years n = number of respondents n * = number of sampled individuals domiciled in Iceland but residing abroad k = sex a = age groups {16, 17, 18-19, 20-24, 25-29, .., 65- 69, 70-73, 74 years *} and m = survey {April, November}. Aðeins er spurt um stéttarfélög í nóvember á hverju ári. Til að fá áætlaðar árstölur þarf því að vega sérstaklega þegar greint er eftir stéttarfélögum. Þá em vogimar sem fengnar em hér að ofan margfaldaðar með eftirfarandi hlutfalli: As labour union participation is only asked about in November of each year, estimated annual totals have to be arrived at by special weightings when analysing according to labour union. This is done by multiplying the weights computed above by the following proportion: N N kalt n kalt Hlutfall 10.2 Kalt Proportion 10.2 þar sem yV' = veginn meðalmannfjöldi, skv. niðurstöðum beggja kannana ársins l\f" = veginn meðalmannfjöldi, ef aðeins nóvemberkönnunin er notuð k = kyn n - alðlirshónnr I Karlar: 16-35,36-44,45-54,55-64,65-74ára a - aldurshopur \Konur: 16.35J6.44A5.54,55.74ára where N' = weighted mean population, using the results of both surveys that year Nn = weighted mean population, using only the November survey k = sex Cl = age grOUPsí^a^es; 16-35,36-44, 45-54, 55-64, 65-74years ö ö F IFemales: 16-35, 36-44, 45-54, 55-74 years l = atvinnustétt {launþegar, ekki launþegar} og t = vinnutími. í Karlar: 0,1-20,21-35,36-44,45-50,5140,61+ttmar \ Konur: 0,1-20,21-35,36-44,45-50,51+ tímar l t = status in employment {employees, non- employees} and = working \\1ales: 0,1-20,21-35,36-44,45-50,51-60,61+hours hourS. I Females:0,1-20,21-35,36-44,45-50,51+ hours 1 Frá og með apríl 1995 hefur aldurshópurinn 70-74 ára verið veginn í einu lagi. 1 From 1995 the age group 70-74 years has been undivided in the weighting scheme.
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