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1 Industrial Production Statistics in Hong Kong, China Census and Statistics Department Hong Kong, China.

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Presentation on theme: "1 Industrial Production Statistics in Hong Kong, China Census and Statistics Department Hong Kong, China."— Presentation transcript:

1 1 Industrial Production Statistics in Hong Kong, China Census and Statistics Department Hong Kong, China

2 2 Industrial production statistics are mainly compiled from data collected through the Annual Survey of Economic Activities. Industrial production statistics are mainly compiled from data collected through the Annual Survey of Economic Activities. The survey is of mandatory nature conducted under the Census and Statistics Ordinance (Chapter 316). The survey is of mandatory nature conducted under the Census and Statistics Ordinance (Chapter 316). Vehicle for collecting data on industrial production

3 3 The survey covers establishments engaging in the following major economic activities Industrial Sector Building, Construction and Real Estate Sectors Import/export, Wholesale and Retail Trades, and Accommodation and Food Service Sectors Transportation, Storage and Courier Services Sector; Information and Communications, Financing and Insurance, Professional and Business Services Sectors Social and Personal Services Sectors Annual Survey of Economic Activities (ASEA)

4 4 To assess the operating characteristics and structure of the various economic activities covered. To evaluate the contribution of these economic activities to the Gross Domestic Product of Hong Kong. Survey Objectives of ASEA

5 5 Census and Statistics Ordinance Legal enforcement of data collection provides authority for the collection of the required data from respondents Confidentiality of the data collected stipulates that information relating to individual establishments is to be kept strictly confidential. Measures for ensuring data confidentiality denying unauthorised access to survey returns releasing only aggregate figures which do not reveal details of individual establishments directly or by deduction destroying completed questionnaires after the data contained therein have been processed Legislation to Support the Conduct of a Statistical Survey

6 6 Survey Population All resident producing units (economic units) engaged in industry sectors under study Industrial classification Hong Kong Standard Industrial Classification V2.0 (HSIC V2.0) is used by the C&SD for classifying economic units to industry sectors according to their major kind of activities HSIC V2.0 is an industrial classification system devised by using United Nations' International Standard Industrial Classification Rev.4 as a framework and adapting it to reflect the industrial structure of the local economy

7 7 Hong Kong Standard Industrial Classification (HSIC) Background Background Introduced in 1990 with regular reviews thereafter Introduced in 1990 with regular reviews thereafter A classification framework for classifying economic units into industry classes A classification framework for classifying economic units into industry classes A framework of basic stratification for sample selection work A framework of basic stratification for sample selection work Current version HSIC V2.0 released in Oct 2008 Current version HSIC V2.0 released in Oct 2008 Adapted from the United Nations’ International Standard Industrial Classification of All Economic Activities (ISIC) Revision 4 to reflect structure of local economy. Adapted from the United Nations’ International Standard Industrial Classification of All Economic Activities (ISIC) Revision 4 to reflect structure of local economy. Aligned with ISIC Rev. 4 up to level 4 Aligned with ISIC Rev. 4 up to level 4 Maintained by C&SD Maintained by C&SD

8 8 HSIC - Classifying establishment An establishment is classified to an industry class based on its economic activity An establishment is classified to an industry class based on its economic activity If it is engaged in more than one type of activities, its major activity will determine the industry class If it is engaged in more than one type of activities, its major activity will determine the industry class Major activity is determined with reference to the principal class of goods produced or services rendered Major activity is determined with reference to the principal class of goods produced or services rendered

9 9 HSIC V2.0 - Hierarchical Structure LevelCode(digit) Description No. of Categories 1 1 alphabet Industry Section numeral Industry Division numeral Industry Group numeral Industry Class numeral Industry Sub-class 1 001

10 10 At the broadest level, HSIC V2.0 comprises 21 industry sections including : At the broadest level, HSIC V2.0 comprises 21 industry sections including : SectionDescription AAgriculture, Forestry and Fishing BMining and Quarrying CManufacturing DElectricity and Gas Supply EWater Supply; Sewerage, Waste Management and Remediation Activities FConstruction GImport/Export, Wholesale and Retail Trades HTransportation, Storage, Postal and Courier Services IAccommodation and Food Service Activities HSIC V2.0 – 21 Industry Sections (1)

11 11 SectionDescription JInformation and Communications KFinancial and Insurance Activities LReal Estate Activities MProfessional, Scientific and Technical Activities NAdministrative and Support Service Activities OPublic Administration PEducation QHuman Health and Social Work Activities RArts, Entertainment and Recreation SOther Service Activities TWork Activities within Domestic Households UActivities of Extraterritorial Organisations and Bodies HSIC V2.0 – 21 Industry Sections (2)

12 12 HSIC V2.0 - Example of Numbering System Level Description HSIC Code Industry Description Industry Section CManufacturing Industry Division 14 Manufacture of wearing apparel Industry Group 141 Manufacture of wearing apparel (except fur, knitted and crocheted apparel) Industry Class 1411 Manufacture of garments and clothing Industry Sub-class Manufacture of raincoats

13 13 Sampling Frame The sampling unit for the ASEA is establishment An establishment is defined as an economic unit which engages under a single ownership or control in one or predominantly one kind of economic activity at a single physical location

14 14 Sampling Frame (Cont'd) Register of establishments maintained by the C&SD - the Central Register of Establishments (CRE) CRE covers all non-agricultural establishments engaged in major economic activities classified under HSIC V2.0.

15 15 Computerised database maintained by the Census and Statistics Department (C&SD) Computerised database maintained by the Census and Statistics Department (C&SD) Contains information on individual establishments in Hong Kong Contains information on individual establishments in Hong Kong The basic unit of the CRE records is an establishment: The basic unit of the CRE records is an establishment: An economic unit which engages, - under a single ownership or control, - at a single physical location -in one or predominantly one kind of economic activity Currently: around 400,000 active establishments (undertakings engaging 1 or more workers) Currently: around 400,000 active establishments (undertakings engaging 1 or more workers) CRE – Background information

16 16 Data items in CRE (1) Record identifier (majority equivalent to Business Registration Number) Record identifier (majority equivalent to Business Registration Number) Registered name of establishment (in English / Chinese) Registered name of establishment (in English / Chinese) Physical address of establishment, with Tertiary Planning Unit (TPU) codes Physical address of establishment, with Tertiary Planning Unit (TPU) codes Mailing address of establishment, with TPU codes Mailing address of establishment, with TPU codes Telephone number Telephone number Fax number Fax number Contact person Contact person

17 17 Data items in CRE (2) Operating status Operating status Industry (HSIC 6 digit) Industry (HSIC 6 digit) Ownership Ownership Actual date of commencement Actual date of commencement Date of last CRE updating Date of last CRE updating Actual employment Actual employment Employment size code Employment size code Cancellation date Cancellation date

18 18 CRE - Updating Updating frequency: Quarterly Updating frequency: Quarterly Updating sources - Administrative records from government departments and survey feedbacks: Updating sources - Administrative records from government departments and survey feedbacks: Business Registration Office of Inland Revenue Department Business Registration Office of Inland Revenue Department Lists of schools from Education Bureau Lists of schools from Education Bureau List of welfare institutions from Social Welfare Department List of welfare institutions from Social Welfare Department Taxi and public light data from Transport Department Taxi and public light data from Transport Department Dormant records from Companies Registry Dormant records from Companies Registry Feedback from various surveys of C&SD, such as Quarterly Survey of Employment and Vacancies (SEV) Feedback from various surveys of C&SD, such as Quarterly Survey of Employment and Vacancies (SEV)

19 19 Name and Address Business Activities (HSIC) Employment Operating Status Establishment (Sampling Unit) Particulars

20 20 Sample Design To avoid subjective selection bias and to make valid scientific inference from the sample result, the stratified systematic sampling (a type of probability sampling), is employed. Stratifying frame units by industry group and, within each industry group, by employment size group. Assumptions : high degree of homogeneity within stratum with respect to major characteristics which are of interest in the survey, such as value added and operating characteristics. high correlation of economic variables with employment.

21 21 Sample Size Determination Factors to be considered : Characteristics of the population Level of details of published statistics Choice of sampling method Precision requirement Resources available

22 22 Determination of Sample Size at Stratum Level Optimum sample size for each stratum based on Neyman’s Allocation. For a given ith stratum of industry group, specify min. coefficient of variation (c.v.) of major statistics Based on previous estimates of sample variance for the stratum of jth employment size group in the ith industry group, compute n ij Different n ij ’s for different statistics, a balance is required

23 23 Sample Size of ASEA (2011) Frame SizeSample Size Sampling Fraction Industrial Sector % Transportation, Storage and Courier Services % Import/Export, Wholesale and Retail Trades, and Accommodation and Food Services Sectors % Information and Communications, Financing and Insurance, Professional and Business Services Sectors % Building, Construction and Real Estate Sectors % Social and Personal Services Sectors %

24 24 Questionnaire Design Basic questions relevant to the survey objectives are arranged in an orderly manner in the questionnaires. Typical data collected include : number of persons engaged; compensation of employees; operating expenses; and business receipts and other income. Relevant questions are grouped into distinct sections Clear explanations are provided corresponding to the questions Wordings used in the questionnaires are easily understandable by respondents to avoid reporting errors

25 25 Data Collection Methods Postal-cum-field visit approach self-explanatory survey questionnaires are mailed to selected establishments selected establishments can complete the questionnaires themselves and return the questionnaires by post Census and Survey Officers of C&SD will visit the respondents and assist them in completing the questionnaires or collect completed ones

26 26 Measures for Reducing Non-response Publicity press releases to announce start of the surveys letters to trade associations to solicit cooperation Callbacks repeat telephone calls or field visits to follow up non-response Reminder letters to urge respondents to respond early Ensuring the quality of enumerators giving continuous supervision to field enumerators training field enumerators on concepts and definitions of terms used in the surveys Legislation backup legal enforcement on the completion of questionnaire assuring confidentiality of data collected

27 27 Data Processing Completed questionnaires are subject to thorough checking by office staff and detailed validation checks by computer before tabulation. Such checking includes : completeness of entries, consistency among data items, and credibility of reported data. Dubious cases are followed up by telephone enquiry or by field verification visit.

28 28 Dissemination of Survey Results To facilitate readers to make judgement on whether the findings are credible, the reports contain information about different aspects of the survey, including survey coverage, sample design and response pattern Survey findings presented in the reports include : operating account for major industry group / industry sector principal statistics (including : number of persons engaged, compensation of employees, operating expenses, business receipts and other income) by major industry group / industry group by number of person engaged by type of ownership by business receipts and other income by value added

29 29 Dissemination of Survey Results (Cont'd) To facilitate readers to assess the reliability of the survey findings, the survey reports also contain information about precision of selected principal statistics. The precision of the economic statistics are measured by : relative standard errors (RSE); and 95% confidence intervals The formula of RSE of a statistic, say value added, is :

30 30 Survey results are released through the following channels: Survey results are released through the following channels: (i)Press release (ii)Home Page of ISD and C&SD (iii)Survey report Key Statistics on Business Performance and Operating Characteristics of the Industrial Sector Dissemination of Survey Results (Cont'd)

31 31 The survey report can be downloaded from C&SD’s Website: Dissemination of Survey Results (Cont'd)

32 32 Detailed annual industrial production statistics are released about 12 months after the survey reference period. In order to provide more timely statistics about the short term changes in industrial production, quarterly index of industrial production is compiled. Detailed annual industrial production statistics are released about 12 months after the survey reference period. In order to provide more timely statistics about the short term changes in industrial production, quarterly index of industrial production is compiled. Other Industrial Production Statistics

33 33 The Index of Industrial Production for a specific quarter is released within 3 months after the survey reference quarter. The Index of Industrial Production for a specific quarter is released within 3 months after the survey reference quarter. The Index is also released through press release and the Internet. The survey results are published in the survey report “Quarterly Index of Industrial Production”, which could be downloaded from the C&SD’s website: productCode=B Other Industrial Production Statistics (Cont’d)

34 34 59 th World Statistics Congress (WSC) Will be hosted by the C&SD of Hong Kong, China from 25 August to 30 August Will be hosted by the C&SD of Hong Kong, China from 25 August to 30 August A biennial meeting of the International Statistical Institute (ISI). A biennial meeting of the International Statistical Institute (ISI). Valuable networking perform for statistical practitioners to share experience, insights and expertise. Valuable networking perform for statistical practitioners to share experience, insights and expertise. “Youth is chosen as the theme for the event. “Youth is chosen as the theme for the event.

35 35 59 th World Statistics Congress (WSC) Website of the Event: Website of the Event:

36 36 Thank you!


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