Tencent science and technology news July 17th news, China Internet Network Information Center (CNNIC) released today in Beijing, the thirty-second China Internet development statistics report. The report shows that as of the end of June 2013, China’s netizens reached 591 million, Internet penetration rate of 44.1%.
according to the introduction, the overall survey is China residential fixed telephone (family telephone, PHS, telephone or mobile phone in the dorm) permanent residents aged 6 and over. Survey of 30 thousand samples, of which residential fixed telephone users, mobile phone users each of the 15 thousand.
the following is the survey details:
Chapter 1 survey introduces
1. Investigation method
(a) Internet users personal survey
1.1 survey overall
Chinese residential fixed telephone (family telephone, PHS, telephone or mobile phone in the dorm) permanent residents aged 6 and over.
When the sample size
survey of 30000 samples, of which, residential fixed telephone users, mobile phone users each of the 15000, the sample covers mainland China’s 31 provinces, autonomous regions and municipalities directly under the central government.
— Survey of population subdivision
survey is as follows:
A: overall residential fixed coverage [including: residential fixed telephone coverage + + student dormitory residents of PHS phone coverage user + other dormitory phone users covering
sub total B: covered by mobile phone crowd;
C: the overall mobile phone coverage and residential fixed common residential fixed [coverage and mobile phone coverage overlap, overlap sub population C], C=A B.
1.2 sampling method
CNNIC needle pairs of the overall A, B, C survey, in order to maximize the coverage of Internet users, the use of dual sampling frame for research. The first sampling box is used to fix the residential phone list, the survey sub total A. The use of the second sampling box is the mobile phone list, the survey sub total B.
for fixed telephone coverage groups, stratified two stage sampling. In order to ensure that the extracted samples are sufficiently representative, the country is divided into 31 layers according to provinces, municipalities and autonomous regions.
province to take samples from the weighted sampling. All cities and counties (including the area, county) sample size based on the city’s fixed residential telephone coverage of the population over the age of 6 accounted for the proportion of the province’s total population coverage.
for mobile phone coverage groups, sampling and fixed phone >