296935
/en/bygg-bolig-og-eiendom/statistikker/stbygganl/aar
296935
statistikk
2017-06-02T08:00:00.000Z
Construction, housing and property
en
stbygganl, Construction, structural business statistics, construction, enterprises, establishments, employees, turnover, gross investments, wage costs, industries (for example demolition, heating, ventilation and sanitation, road building), size of enterprise, newly-established enterprise, enterpises that have ceased trading, erecting buildings, construction work, specialised building and construction activitiesConstruction , Construction, housing and property
true

Construction, structural business statistics

Updated

Next update

Not yet determined

Key figures

5.8 %

increase in turnover for the construction industry from 2014 to 2015

Structural business statistics for construction. industry division 41-43. Final figures
Number/NOK millionIn per cent
20152014 - 20152011 - 2015
The tables are updated 15. June with data for gross investments.
Enterprises
Number of enterprises56 6542.712.0
Employment (persons)229 6711.715.0
Turnover482 751.55.834.5
Value added156 636.75.832.9
Gross operating surplus44 120.17.437.6
 
Local kind-of-activity units
Local KAUs57 7282.812.2
Employment (persons)231 0311.615.1
Turnover489 066.75.834.8
Compensation of employees113 450.05.031.0
Gross investments14 161.448.550.5

See more tables on this subject

Table 1 
Principal figures, by number of persons employed and industry group. Entreprises

Principal figures, by number of persons employed and industry group. Entreprises
2015
0-9 employed010-019020-049050-249250-
1VAT is not included
2Factor costs.
The tables are updated 15. June with data for gross investments.
Total
Enterprises51 9652 7821 45840544
Employment78 45337 43842 66336 38334 734
Compensation of employees (mill. NOK)124 673.318 466.623 249.822 532.823 594.1
Turnover (mill. NOK)1163 621.160 767.084 190.886 794.287 378.4
Production value (mill. NOK)1162 820.960 555.483 942.986 461.687 494.0
Value added (mill. NOK)1251 378.122 704.928 626.626 758.227 168.9
Bruttoinvesteringer (mill. kr)110 158.6921.41 050.91 265.7507.8
 
41 Construction of buildings
Enterprises22 35695448814513
Employment29 91312 89714 32112 37412 063
Compensation of employees (mill. NOK)19 093.65 981.07 570.37 821.08 788.1
Turnover (mill. NOK)1101 579.123 721.833 949.741 922.444 140.3
Production value (mill. NOK)1101 035.023 773.834 014.241 723.844 257.0
Value added (mill. NOK)1225 996.77 033.19 187.79 679.710 138.9
Bruttoinvesteringer (mill. kr)17 901.9324.9148.2561.3314.1
42 Civil engineering
Enterprises74292673714
Employment1 5571 2772 0333 8338 843
Compensation of employees (mill. NOK)1654.0717.91 227.42 464.36 337.1
Turnover (mill. NOK)14 062.42 983.06 106.08 508.523 952.8
Production value (mill. NOK)14 070.02 987.26 104.08 495.423 939.5
Value added (mill. NOK)121 012.6957.81 624.72 723.67 732.9
Bruttoinvesteringer (mill. kr)1483.961.7269.1141.274.7
43 Specialised construction activities
Enterprises28 8671 73690322317
Employment46 98323 26426 30920 17613 828
Compensation of employees (mill. NOK)114 925.611 767.714 452.112 247.58 468.9
Turnover (mill. NOK)157 979.634 062.344 135.236 363.419 285.3
Production value (mill. NOK)157 715.933 794.443 824.836 242.419 297.5
Value added (mill. NOK)1224 368.814 714.117 814.214 354.89 297.2
Bruttoinvesteringer (mill. kr)11 772.7534.8633.6563.2119.0

Table 2 
Principal figures, by number of persons employed and industry group. Local kind-of-activity units

Principal figures, by number of persons employed and industry group. Local kind-of-activity units
2015
0-9 employed10-19 employed20-49 employed50-249 employed250 or more employed
1VAT is not included.
The tables are updated 15. June with data for gross investments.
Total
Local KAUs52 4273 0601 68353028
Employment (persons)80 28841 38449 68645 93413 739
Compensation of employees (mill. NOK)25 831.320 781.627 702.329 109.610 025.1
Turnover (mill. NOK)1169 136.169 890.8100 736.0108 875.140 428.7
Gross Investment (mill. NOK)10 260.3980.31 104.41 445.1371.4
41 Construction of buildings
Local KAUs22 4621 0055301669
Employment (persons)30 30913 64515 66814 5144 309
Compensation of employees (mill. NOK)9 363.16 451.48 493.99 433.53 122.3
Turnover (mill. NOK)1103 540.826 319.440 368.650 262.515 937.3
Gross Investment (mill. NOK)7 968.2328.7150.2473.483.1
42 Civil engineering
Local KAUs8181411097710
Employment (persons)1 7951 9453 3217 2656 491
Compensation of employees (mill. NOK)796.81 138.52 130.34 893.35 006.3
Turnover (mill. NOK)15 312.45 865.39 339.517 456.820 015.9
Gross Investment (mill. NOK)506.389.0284.8451.1245.8
43 Specialised construction activities
Local KAUs29 1471 9141 0442879
Employment (persons)48 18425 79430 69724 1552 939
Compensation of employees (mill. NOK)15 671.513 191.817 078.214 782.81 896.6
Turnover (mill. NOK)160 282.937 706.151 027.941 155.94 475.5
Gross Investment (mill. NOK)1 785.8562.6669.3520.542.5

Table 3 
Construction. Principal figures, by industry subclass. Enterprises

Construction. Principal figures, by industry subclass. Enterprises1
EnterprisesEmployment (persons)Compensation of employees (mill. NOK)Turnover (mill. NOK)Produksjonsverdi (mill. kr)Bearbeidingsverdi (mill. kr)2Bruttoinvesteringer (mill. kr)
1VAT is not included.
2Factor cost.
The tables are updated 15. June with data for gross investments.
Sum Section F
201455 150225 776107 000.9456 315.6452 091.0148 062.29 135.7
201556 654229 671112 516.6482 751.5481 274.8156 636.713 904.3
41 Construction of buildings
201423 12780 81938 157.8230 389.8227 864.057 930.55 025.7
201523 95681 56839 254.0245 313.2244 803.862 036.09 250.4
41.1 Development of building projects
20145 7165 2863 573.164 366.162 798.513 281.42 789.7
20156 2635 6973 791.773 092.372 566.316 050.17 524.7
41.2 Construction of residential and non-residential buildings
201417 41175 53334 584.7166 023.6165 065.544 649.12 236.1
201517 69375 87135 462.3172 220.9172 237.545 985.91 725.7
42 Civil engineering
201494514 2339 024.238 422.438 420.211 830.7745.1
201595217 54311 400.845 612.645 596.114 051.61 030.6
42.1 Construction of roads and railways
20143829 0406 014.627 291.227 291.97 664.5445.3
201540310 7137 244.831 547.231 537.68 822.3795.2
42.2 Construction of utility projects
20144244 3782 581.39 222.79 219.73 590.9252.2
20154166 0443 732.312 152.512 141.64 635.0209.1
42.9 Construction of other civil engineering projects
2014139815428.21 908.51 908.6575.447.6
2015133786423.71 912.91 916.9594.326.4
43 Specialised construction activities
201431 078130 72459 819.0187 503.4185 806.878 300.93 364.9
201531 746130 56061 861.8191 825.7190 874.980 549.13 623.3
43.1 Demolition and site preparation
20146 99326 80912 028.749 196.049 070.117 136.31 607.7
20157 21926 80812 506.548 905.548 960.417 868.11 524.4
43.2 Electrical, plumbing and other construction installation activities
20148 03457 97530 489.583 385.482 300.736 901.4779.4
20158 12957 64931 059.184 730.884 037.537 611.4996.7
43.3 Building completion and finishing
201410 42122 1516 615.721 763.521 327.99 964.6306.6
201510 65022 3457 212.223 400.023 138.010 515.2321.7
43.9 Other specialised construction activities
20145 63023 78910 685.133 158.533 108.114 298.6671.1
20155 74823 75811 084.034 789.334 739.114 554.4780.5

Table 4 
Construction. Principal figures for the industrial section, by county.

Construction. Principal figures for the industrial section, by county.
2015
Local KAUsEmployment (persons)Compensation of employees (mill. NOK)1Turnover (mill. NOK)1Gross Investment (mill. NOK)1
1VAT is not included
2Svalbard, Jan Mayen and the Norwegian continental shelf.
The tables are updated 15. June with data for gross investments.
Total57 728231 031113 450.0489 066.714 161.4
Østfold3 54413 0846 045.824 949.21 287.3
Akershus6 52221 82410 219.050 413.71 116.8
Oslo5 56333 23219 571.694 776.93 695.4
Hedmark2 3427 7113 366.113 424.9318.9
Oppland2 7878 7563 633.014 536.0332.1
Buskerud4 14314 5516 776.831 064.1607.9
Vestfold2 99110 5454 946.619 371.2718.7
Telemark2 3637 0233 134.011 416.4257.9
Aust-Agder1 6514 4901 908.67 319.0171.5
Vest-Agder2 5519 0094 565.918 273.5250.0
Rogaland4 44621 14011 042.045 936.71 401.0
Hordaland5 31923 11311 731.850 771.21 215.0
Sogn og Fjordane1 5055 1372 148.98 114.9304.2
Møre og Romsdal3 00011 5045 271.420 278.7525.8
Sør-Trøndelag2 97213 2886 664.128 654.5946.6
Nord-Trøndelag1 3575 3172 397.69 897.5235.4
Nordland2 35011 0245 206.618 438.2375.6
Troms - Romsa1 6066 8313 215.014 775.6301.7
Finnmark - Finnmárku7023 2441 475.86 211.297.1
Other Norwegian territories214208129.6443.12.5

Table 5 
Principal figures, by industry subclass. Local kind-of-activity units

Principal figures, by industry subclass. Local kind-of-activity units1
Local KAUsEmployment (persons)Compensation of employees (mill. NOK)Turnover (mill. NOK)Gross Investments (mill. NOK)
1VAT is not included.
The tables are updated 15. June with data for gross investments.
Sum Section F
201456 154227 347108 079.2462 273.79 538.4
201557 728231 031113 450.0489 066.714 161.4
41 Construction of buildings
201423 34377 76035 683.7220 908.05 169.5
201524 17278 44536 864.1236 428.69 003.6
41.1 Development of building projects
20145 7655 4193 692.465 272.13 168.8
20156 3085 8013 892.473 946.37 526.4
41.2 Construction of residential and non-residential buildings
201417 57872 34131 991.2155 635.92 000.7
201517 86472 64432 971.7162 482.31 477.2
42 Civil engineering
20141 07617 72811 797.051 217.41 062.9
20151 15520 81713 965.157 989.81 577.0
42.1 Construction of roads and railways
201447212 2758 579.238 910.5725.9
201552113 7349 580.142 331.81 273.6
42.2 Construction of utility projects
20144634 6072 763.910 270.7289.4
20154986 2503 928.413 600.6273.9
42.9 Construction of other civil engineering projects
2014141846453.92 036.247.6
2015136833456.62 057.429.6
43 Specialised construction activities
201431 735131 85960 598.5190 148.23 306.0
201532 401131 76962 620.8194 648.33 580.8
43.1 Demolition and site preparation
20147 05927 13512 195.650 003.11 612.5
20157 29227 10412 685.849 501.31 526.0
43.2 Electrical, plumbing and other construction installation activities
20148 50458 48030 871.984 509.6697.6
20158 59658 42931 547.386 478.7942.9
43.3 Building completion and finishing
201410 45922 1726 694.121 957.6317.5
201510 67822 3167 185.323 304.1323.0
43.9 Other specialised construction activities
20145 71324 07210 836.933 678.1678.3
20155 83523 92011 202.535 364.2788.8

About the statistics

The structural statistics for construction are a part of the industrial statistics and present information about the activities in this sector on the basis of financial information. The statistics include figures for both local KAUs and enterprises, and are used as inputs to the national accounts.

Definitions

Definitions of the main concepts and variables

Enterprise In the Standard Industrial Classification (SIC) an enterprise is the smallest combination of legal entities that is an organizational unit producing goods or services, which benefits from a certain degree of autonomy in decision making.

Local kind-of-activity unit (local KAU) The SIC defines a local KAU as a functional unit, which at a single physical location is engaged primarily in activities within a specific activity group.

Owners without regular pay who work for the enterprise on a daily basis Owners include owners of sole proprietorships, or general partnerships who work for the enterprise on a daily basis without receiving regular wages. Co-owners of limited companies and cooperatives who are paid for working for the enterprise are not included.

Employees An employee is a person that works for an employer and receive compensation in the form of wages, pay, fee, bonuses, payment in kind etc. The number of employees in the structural statistics shows an average of the number that has been employed throughout the year.

Temporary staff from employment agencies are not included in the employment figures.

Employment The employment is the sum of owners and employees working in the unit. 

Personnel rented from temporary staff recruitment agency are not included in the employment figures. Rented personnel from Norwegian agencies are included in the structural business statistics for industry group 74.502 - Provision of personnel. Personnel rented from foreign agencies are not included in the structural business statistics at all.

Man-years The figures include the number of man-years worked by the employees in an enterprise.

Turnover/sales Turnover is defined as the sum of remuneration for rendering of services to customers and sales of merchandise, and gross income from other activities. Rental income, commissions and special taxes are included, while subsidies and profits from sales of business assets are not. VAT is not included in the statistics.

Purchase of merchandise Purchase of merchandise is goods bought for the purpose of resale with no added value.

Compensation of employees Compensation of employees includes wages, holiday pay, fees, etc., employer's national insurance contribution, reportable pension costs and other personnel costs. Compensation of employees does not include remuneration to owners of sole proprietorships or partnerships or to family members without regular wages.

Production value Production value means sales corrected for changes in stocks of finished goods, work in progress, and goods and services purchased for resale. Purchases of goods and services for resale are deducted, while capitalized own investment work is added.

Value added Value added is figured as the sum of production value less the purchase of goods and services (for other goods and services than those purchased for resale) and special public taxes, and corrected for changes in stocks of raw materials and consumer goods. Special public subsidies for manufactured/sold merchandise and other public subsidies/reimbursements are included.

Gross Investment Gross Investment is the total value of new capital goods such as buildings and plant (except housing), machinery, tools, implements, equipment and vehicles (except for personal use), both new and used. Improvements are added while sales of used capital stock are deducted. Gross Investment figures are minus incoming value added tax.

Acquisitions This includes investments in new assets and improvements of own assets.

New investments include all newly acquired fixed assets acquired and completed in the course of the year, excluding investments in unimproved property. In assessing the value of the business asset, cost price is used for purchases and production cost for own manufactures. Acquisitions through financial leasing are included when the asset is entered as an asset in the balance sheet.

Improvement of own assets includes the value of all capitalized improvements and major repairs purchased and executed by others and/or undertaken by own employees on own business assets. A precondition is that such improvements increase the efficiency/value of and/or prolong the lifetime of the business asset. The improvement is estimated at purchase price at time of purchase or at production cost when it is manufactured.

Sale of business assets Sale of business assets is estimated at the sales value (replacement value) upon realization of used business assets over the course of the year. The amount includes investment tax. The business asset is regarded as sold when it is delivered.

Births of enterprises The number of births of enterprises includes all new enterprises, both new establishments and new enterprises registered due to change of ownership, i.e. new enterprises that take over existing activity.

Deaths of enterprises The number of deaths of enterprises includes enterprises that close down and enterprises that is closed down due to change of ownership.

Standard classifications

The Standard Industrial Classification (SN2007) used in Statistics Norway is based on the EU Standard NACE Rev. 2.

Administrative information

Name and topic

Name: Construction, structural business statistics
Topic: Construction, housing and property

Responsible division

Division for Construction and Service

Regional level

Preliminary figures only on national level. Final figures also on county level for some of the main variables. Other variables at the county level may be ordered.

Frequency and timeliness

Annual. Preliminary figures are presented 10 months after the end of the reference period, final figures within 16 months after the end of the reference period.

International reporting

The statistics are reported to EUROSTAT.

Microdata

Primary data and the compiled statistics are stored temporarily in the programming language SAS, and stored permanently as text-files.

Background

Background and purpose

The structural business statistics for construction are a part of the industrial statistics of Statistics Norway, and present detailed information about the activities in this sector on the basis of financial information.

The statistics are compiled in accordance with the EU regulation on structural business statistics, and were first published in 1966. Since 1995 final results have been published on both the enterprise level and the local kind-of-activity unit (local KAU) level. Preliminary figures for turnover and employment on the enterprise level were published for the first time for 2001. From 2002 it is also published preliminary figures for production value, total purchase of goods and services, wages and salaries and investments, in accordance with the EU regulation.

Users and applications

The annual structural statistics are based on the data needs of the National Accounts (NR) and in accordance with the EU regulation on structural statistics. In addition, ministries and various trade organizations want and need statistical data. Business and industry and other users also commission customized construction statistics from Statistics Norway.

Equal treatment of users

No external users have access to the statistics and analyses before they are published and accessible simultaneously for all users on ssb.no at 8 am. Prior to this, a minimum of three months' advance notice is given inthe Statistics Release Calendar. This is one of Statistics Norway's key principles for ensuring that all users are treated equally 

Coherence with other statistics

The structural statistics on construction activities are a part of Statistics Norway industrial statistics covering most industries. Short-term statistics are published for certain industries in addition to the structural statistics. These show figures for shorter periods than one year and usually for the entire country as a whole.

A quarterly production index and order statistics, monthly, quarterly and annual building statistics and periodic sales statistics are also published for construction activities. Construction and housing - theme page .

Accounts statistics are also published for construction activities. There are some systematic differences between the structural statistics and accounting statistics. The accounting statistics include only limited companies, while the structural statistics also include other organizational types. As a consequence, the amounts in the structural statistics will normally be higher than in the accounting statistics. The accounting statistics are only compiled at enterprise level, while the structural statistics are also compiled at the local KAU level. The results of regionalization derived from enterprises will differ from the results of regionalization derived from local KAU units. Comparisons between the structural statistics and the accounting statistics should therefor be made with reservation.

The employment figures in the structural business statistics are not directly comparable with the registerbased employment statistics . The structural business statistics shows for example an average of number of employees through the year, while the registerbased employment statistics shows the number of employees in the 4. quarter. Furthermore the structural business statistics does not include enterprises within the public service sectors 110, 510 and 550.

Legal authority

The Statistics Act, Sections 2-2, 2-3 and 3-2

EEA reference

EU Council regulation No 58/97 December 20, 1996.

Production

Population

The structural statistics for construction are organized according to the NACE-standard (see section 4.2) and include the following industry division:

41 Construction of buildings

42 Civil engineering

43 Specialised construction activities

The structural business statistics comprise most of the enterprises that are registered in the abovementioned industry division, as long as the enterprise was registered with activity in Norway in the relevant statistical year.

The exception is enterprises within the public service sectors 110, 510 and 550. Such units are not included in the structural business statistics for construction even though they should happen to have operations in the abovementioned industry.

However, all other enterprises in the public sector or owned by the public sector, i.e. units with sector codes 610, 630, 635, 660 and 680, are included in the statistics if they have activity in the abovementioned industry.

The statistics do not include Army construction activities for own account. Moreover, the statistics do not include proprietary building and construction activities performed for own account by enterprises that belong to other industry divisions, e.g. construction activities performed by employees of industrial companies. The only exception to this rule applies to a few electric power plants where power development activities have been organized into local KAUs spun off from power supply activities.

Production of prefabricated houses and building materials, the construction and repair of oil platforms and modules (except for the production of concrete platforms etc.) is according to the Standard Industrial Classification classified as manufacturing (industry class 20.30 and industry subclass 35.114). Statistics for these are found in the publication NOS Manufacturing Statistics.

In some cases projects are involving subcontractors, and often both the main contractor and subcontractor are classified in the construction industry. In these cases figures from both the main contractor and subcontractor are included in the statistics.

Data sources and sampling

For a sample of the enterprises in the population, including all enterprises with more than one local kind-of-activity unit (local KAU) , the statistics are based on Trading Statements (NO) and a supplementary questionnaire. The Trading Statements are either attached to the questionnaires or submitted electronically via the Norwegian Internal Revenue Service.

Information, like the accounts and turnover, about the enterprises with only one local KAU outside the sample is obtained from the following sources:

  • trading statements (NO) electronically submitted via the Norwegian Internal Revenue Service
  • the Register of Annual Company Reports in Brønnøysund
  • the VAT Register

From the statistical year 2015 the number of employees is collected via  A-ordningen, where employers are obligated to submit monthly reports for everyone who receives wages and salaries. Previously, these figures were collected through the register of Employers and Employees. These two sources are not directly comparable.

The Central Register of Establishments and Enterprises is used to obtain necessary information about the population. The VAT Register, the Central Coordinating Register for Legal Entities, information from trade organizations and direct input from the enterprises are used to update the Central Register of Establishments and Enterprises.

The population consists of all enterprises in the relevant industry divisions with registered activity in the reference year. The population is divided into subpopulations, called strata, after criteria like industrial classification and number of employees. In some of the strata, all enterprises are always included in the sample. From the remaining strata, a representative selection of enterprises is drawn. All enterprises in this sample are asked to report a full set of Trading Statements and to complete a questionnaire.

This detailed survey of accounting data is combined with the additional information from the various registers and the structural survey of Statistics Norway to form the basis for the estimation of the financial structures of the different industries and the sector as a whole.

Collection of data, editing and estimations

A complete set of statements (NO with supplementary forms) is obtained from a sample of enterprises. The supplementary forms is collected by postal questionnaires, and it is possible to report data on the Internet. The questionnaires are sent out in April/May after the end of the statistical year, with a response deadline of four or five weeks. The enterprises that do not respond on the first letter will be given reminders in writing for about a further six months from the first deadline. Failure to respond is subject to fines.

For the other enterprises, sales figures and other essential accounting data were obtained from Trading Statements (NO) submitted electronically via the Norwegian Internal Revenue Service or from annual accounts in the Register of Annual Company Reports in Brønnøysund. Sales figures were furthermore obtained from enterprises in the "VAT Register".

In this way we collect data from all enterprises in the population.

Checks and corrections of the General Trading Statements (NO) for the enterprises included in the sample were undertaken, including the form in which additional information is given per local KAU. The particularly critical control items are industry code, employment, turnover, compensation of employees, other operating expenses and operating profit/loss as well as various breakdowns of turnover and own investment projects by region and type of project. The gross investment figures are also checked and revised.

The whole population are checked against reports for last year, the Central Register of Establishments and Enterprises, the Register of Annual Company Reports in Brønnøysund and other available sources, and by contacting the respondent if necessary.

The preliminary figures are not as thoroughly revised as the final figures.

For the enterprises where a complete NO with supplementary form exists, no variables are estimated. For these enterprises the information in the forms are used.

For enterprises outside the sample that submit Trading Statements electronically, only data for the supplementary forms was estimated. Afterwards we used the existing data from the annual accounts according to the Register of Annual Company Accounts and split them up into respective subitems according to the relative shares shown in the data from the NO sample. We subsequently took data according to the Structural Survey and from the "VAT Register" into account in the statistical calculation.

The other items are estimated according to the division in the sample (organized by subclass and same size groups with respect to turnover, operating expenditure or other relevant distribution keys).

Enterprises with sales according to the VAT Register or Structural Survey The NO items are estimated with sales as a key for the enterprises outside the sample where sales are obtained from the "VAT Register".

Employment figures Employment figures for the enterprises are mainly obtained from the Register of Employees and Employers (the Aa-Register), but some are estimated on the basis of the enterprises’ wage costs or turnover. The Employment figures are revised, based on information from other sources, before dissemination.

Seasonal adjustment

Not relevant

Confidentiality

If less than three enterprises/Local KAUs represents a statistical variable, the numbers are not published. The reason is the risk that the units can be identified. This is especially critical when regional data are published.

Comparability over time and space

Preliminary figures for turnover and employment on the enterprise level are published for the first time for 2001. Preliminary figures are published while data are still under revision, and may therefore deviate from the final figures that are published within 16 months of the end of the reference year. Preliminary data for the enterprises in the sample that has not yet responded at the time of publishing are estimated by using other sources.

Generally, when making comparisons with previously published figures it must be kept in mind that older data may have been corrected during later revisions. Updating of industries in the Central Register of Establishments and Enterprises may also have caused revisions for some of the industries. These changes have not been dated back.

From 2003 the state road construction activity was sorted out as a state-owned enterprise called Mesta AS. Mesta AS is included in the figures from 2003.

From the statistical year 2015 the number of employees is collected via A-ordningen, Previously, these figures were collected through the register of Employers and Employees. These two sources are not directly comparable.

Preliminary figures are published while data are still under revision, and may therefore deviate from the final figures that are published within 18 months of the end of the reference year. Preliminary data for the enterprises in the sample that has not yet responded at the time of publishing are estimated by using other Sources.

Accuracy and reliability

Sources of error and uncertainty

Returned questionnaires are read optically and automatically checked. An optical image of the form is first saved electronically and then checked manually in order to ensure that the primary data are as correct as possible. Nevertheless, the results of a statistical survey may contain some measurement and processing errors.

Measurement errors occur when the provider of the data gives incorrect answers due to forgetfulness, misunderstanding of questions etc.

Processing errors are errors from coding or errors that occur during the transferring of information from the questionnaire to a machine-readable medium or during revisions.

Non-response, that is when the respondent does not return the form or returns the form with incomplete information, will always be an aspect of form-based surveys. In the structural business statistics, non-respondent enterprises are treated the same way as enterprises outside the sample population.

Sampling errors is the uncertainty that occurs when the figures are produced on the basis of a sample of data, and not the whole population. The sampling error is the expected deviation between the result of the sample and the result if the whole population were examined.

Imbalances in the sample (e.g. misleading stratification) can cause errors for the variables for which information has not been obtained for all units in the population. Statistics Norway assumes explicitly by the imputation that enterprises outside the sample have the same cost and income structure as enterprises in the sample.

Preliminary figures are a full census.

In the structural business statistics, the Central Register of Establishments and Enterprises, the Register of Annual Company Reports in Brønnøysund, the VAT Register and the Aa-ordning are used in order to define the population and help collect the necessary data.

Errors in these administrative registers - like time gaps in registration, incorrectly identified unit characteristics etc. may therefore be a potential source of uncertainty in the statistics and may for instance have an impact when dividing the population into adequate strata.

Revision

Not relevant

Contact

Error occured rendering window "Statistikkside - faktaside inngang" (key 209) while handling request to site path: /0/en/bygg-bolig-og-eiendom/statistikker/stbygganl?id=2187