Utilizing the Internet as a Viable Data Collection Method

Transcription

1 LOGO Utilizing the Internet as a Viable Data Collection Method KNSO

2 II Background II II Applying the Internet for a statistical surveys 1) Application of the e-survey method to the CMMS 2) Introduction of an electronic housekeeping book 3) Introduction of the e-population Census Cost-benefit analysis of the Internet survey Limits and prospects

3 Why NSO adopt a new data collection method? Increase in difficulties of field surveys. Growing single and dual income families(2005) Single (17%) Dual income (35.8%) Others (50%) Burden in the matters of time and privacy Inefficiency caused by traffic jam Interviewer can only visit 3~4 households per day.

4 Why NSO adopt a new data collection method? Great developments made in IT. Increase in diffusion rate of PC(85%, 2005) Expansion of internet users Year Internet Usage(%) Source: National Internet Development Agent of Korea ( We apply electronic survey methods as a new solution.

5 What are the main surveys using internet method? Purpose Current Mining & Manufacturing Survey To provide data for economic trend Household Income & Expenditure Survey To provide data on income & expenditures Population Census To understand the characteristics of population & housing Cyber Shopping Mall survey To provide data for analyzing the trends of e-commerce Sample size About 8,000 establishments About 7,100 households All About 4,500 enterprises Periodicity Monthly Monthly Every 5 years Monthly Rate of Internet survey 50.4% (3,862) 24.8% (1,639) 0.9% (140,000) About 15% (700)

6 Application of the e-survey method to the CMMS 1 In the case of PC communication Basic concept PC < establishment > E-survey process. Install special software in the computer of a respondent. Educate respondents on how to use the program. Respondents fill out the electronic questionnaire using the S/W modem Transferring data NSO server. Save the questionnaire file and transfer it to NSO Compiling data < NSO > < NSO >

7 Application of the e-survey method to the CMMS 1 In the case of PC communication Difficulties encountered in the early stage. Some opposition from local offices due to possibility of a reduction in staff Hard to install S/W and teach each respondent how to use it Some technological errors have occurred Danger derived from hacking and weakness in information protection In the first stage, the participation rate was very low (below 10%)

8 Application of the e-survey method to the CMMS 2 In the case of the Internet method Basic concept PC Internet NSO server Compiling data Transferring < establishment > data < NSO > < NSO > Process of the Internet survey for CMMS. Type the web address in Internet search engine ( Log in with respondent s ID and password. Fill out the electronic questionnaire. Transfer the data to the NSO

9 Application of the e-survey method to the CMMS 2 In the case of the Internet method Strength of the Internet method. No installation of S/W required Easy to upgrade S/W to updated version Provides various useful functions such as a help function, explanation of survey terms and search function for production items Increase in participation of the Internet survey Year % 46.6% 47.1% 53.7% Source : internal data of NSO

10 Application of the e-survey method to the CMMS 2 In the case of the Internet method ID Password Login

11 Application of the e-survey method to the CMMS 2 In the case of the Internet method ID name address item production quantity Sum of money shipment A reference column Save

12 Introduction of an electronic housekeeping book Basic concept bank credit card Collecting information < respondent > Housekeeping Book DB Storing in DB Statistical DB Survey process Download S/W from the website( Log in with ID and password Fill out electronic questionnaire Transfer data to NSO

13 Introduction of an electronic housekeeping book Special functions Collecting income and expenditure data from banks and credit card companies Checks data omissions in monthly bills or living expenses Visualizing Graphs according to items The participation ratio of e-survey Year Ratio 4.8% 11.6% 23.0% 24.8% # Of household ,639 1,767 Sauce : internal data of NSO

14 Introduction of an electronic housekeeping book Expected effects 1) Raise the timeliness of statistical data Saving about 10 days in data editing process 2) Improvement in the accuracy of data Collecting and error checking function 3) Increase in responses from single and dual income households The degree of statistics representative also gets higher 4) Decrease in work load of the surveyor Workers can focus on other projects

15 Introduction of an electronic housekeeping book download

16 Introduction of an electronic housekeeping book date item income expenditure

17 Introduction of the e-population Census Basic concept housing DB address DB linkage PC Internet Transferring data NSO DB Survey process. Take applications from households that want to use the e-census. Down load S/W from the web site and login with ID. Fill out e-questionnaire. Transfer data to NSO

18 Introduction of the e-population Census Result and effects. Applied to only o.9%(140,000) of all households But, it provides valuable experience for the next Census. Effective in encouraging the participation of groups such as single and dual households

19 Fundamental assumption Focused on direct-cost and direct-benefit Direct cost primarily includes cost of developing S/W Direct benefit primarily includes expected reduction in cost of labor Excludes all indirect cost and benefits A very simplified model.

20 1 Current Mining & Manufacturing Survey. Table (million Won) Benefit Cost B/C Ratio CMMS ,520% Analysis - Cost : 50 million won per year. - Benefit : average 7,600 million won per year. B/C ratio : 1,520% Benefit is more than 15 times of the cost

21 2 Household Income and Expenditure Survey. Table (million Won) Benefit Cost B/C Ratio HIES % Analysis - Cost : 1,600 million won per year. - Benefit : 950 million won per year B/C ratio : only 59% We may extrapolate the e-hies as an inefficient method

22 2 Household income and Expenditure Survey. The reason why B/C ratio is low 1) Issue a compensation of 50,000won per household for respondents who complete the e-survey If more households participate, more direct-cost will be needed 2) Indirect benefits were excluded Increase in the recollection rate of housekeeping records Reduction in the possibility of exposing privacy Relieving the burden of respondents If these conveniences were included, the B/C ratio would increase to a higher percentage.

23 3 E-population Census. Table (million Won) Benefit Cost B/C Ratio Population Census % Analysis - Cost : 200 million won - Benefit : 460 million won B/C ratio : 230% Even though the participation rate was lower than expected, the B/C ratio shows the efficiency of the e-census.

24 What are the limits of Internet survey Impossible to apply in an area deprived of the Internet. about 25% of the total population in Korea (especially in rural areas and elderly) Only volunteers people can be targeted Well-structured system is needed to prevent privacy leakage against hacking E-survey is a simple supplemental method to the traditional paper survey

25 Prospect Cuts down the cost of the statistical survey Reduces the processing time of data CMMS : 1.5days of processing time HIES : 10days Increases the accuracy of data An editing program assures a high quality of data E-survey through the internet will expand rapidly.

26 LOGO Utilizing the Internet as a Viable Data Collection Method