สำมะโนธุรกิจและอุตสาหกรรม พ.ศ.2565 ธุรกิจทางการค้าและธุรกิจทางการบริการ กรุงเทพมหานคร

The 2022 Business and Industrial Census: Business Trade and Services Sample Design 1 . Establishments with 1 - 10 persons engaged The stratified systematic sampling was adopted for the survey . Each province was constituted a stratum . Each Thailand Standard Industrial Classification ( TSIC 2009 ) and sub - size of establishment was constituted a sub - stratum . The sampling units were establishments . 1 . 1 Stratification Each province was constituted a stratum . There were altogether 77 strata . Each stratum was classified by TSIC 2009 into 6 18 sub - stratum at 3 09 activity levels and in each sub - stratum was divided into 2 sub - sizes according to number of persons engaged : 1 - 5 and 6 - 10 . 1 . 2 Selection of Sampling Unit The sample selection of establishments was done by systematic sampling and performed separately and independently in each sub - stratum and sub - size . The total selected sampling units were 93,771 establishments from total 2,019,526 establishments . 2 . Establishments with 11 persons engaged and over All the establishments with 11 persons engaged and over were completely enumerated . There were 76,563 establishments which were divided into 10 sub - sizes according to number of persons engaged as follows : Sub - size 3 4 5 6 7 8 9 10 11 12 Number of persons engaged 11 - 15 16 - 20 21 - 25 26 - 30 31 - 50 51 - 100 101 - 200 201 - 500 501 - 1,000 >1,000 115