- v01: Edited, anonymous dataset for public distribution.
The survey will cover the whole of the Indian Union except (i) Leh and Kargil districts of Jammu & Kashmir, (ii) interior villages of Nagaland situated beyond five kilometers of the bus route and (iii) villages in Andaman and Nicobar Islands which remain inaccessible throughout the year.
Producers and sponsors
Authoring entity/Primary investigators
National Sample Survey Organisation
Ministry of Statistics and Programme Implementation (MOSPI)
Selection of hamlet-groups/sub-blocks / households
Proper identification of the FSU boundaries: The first important task of the field investigators is to ascertain the exact boundaries of the sample FSU as per its identification particulars given in the sample list. For urban samples, the boundaries of each Urban Frame survey (UFS) block may be identified by referring to the map corresponding to the frame code specified in the sample list (even though map of the block for a latter period of the UFS might be available). However for 66 towns for Karnataka where EC '98 work was done without using UFS blocks, the boundaries of each selected ward are to be ascertained by referring to the appropriate map.
Formation of segment 9: Having determined the boundaries of the sample FSU, all big non-agricultural enterprises having 200 or more workers in the entire FSU and having operated at least one day during last 365 days preceding the day of survey (hereinafter to be called as big enterprises for brevity) will be listed and eligible units under coverage will be surveyed separately in addition to the eligible smaller enterprises (i.e. enterprises having less than 200 workers and having operated at least one day during last 365 days preceding the day of survey) under coverage to be surveyed as per normal procedure. All the listed big units (whether under coverage or not) will constitute segment 9.
Decision on hamlet-group/sub-block formation: Having constituted segment 9 as stated above, a decision has to be taken whether listing has to be done in the whole sample FSU or not for formation of sampling frame of the smaller enterprises. For this, approximate present population (P) and approximate total number of non-agricultural enterprises (E) for the whole of sample FSU may be ascertained first from knowledgeable persons While ascertaining the approximate number of non-agricultural enterprises for formation of hg's/sb's, big enterprises will be excluded. Depending upon the values of 'P' and 'E', decision may be taken to divide the sample FSU into a fixed number of hamlet-groups (hg's - the term applicable for rural samples) / sub-blocks (sb's - the term applicable for urban samples) as per the rules given below:
0 - 1200 1 0 - 120 1
1201 - 1600 4 121 - 160 4
1601 - 2000 5 161 - 200 5
2001-2400 6 201 - 240 6
2401 -2800 7 241 - 280 7
For selected wards of the aforesaid 66 towns of Karnataka constituent UFS blocks will be treated as sub-blocks and as such no sub-block formation will be resorted to in the selected UFS blocks. However only two UFS blocks will be selected from these selected wards: one satisfying some criterion with probability 1 and the remaining by simple random sampling. In case there are only two or less UFS blocks, all will be selected.
The number (D) of hamlet-groups (hg's)/ sub-blocks (sb's) to be actually formed in the sample FSU will be the higher of the two values as per population and enterprise criteria. If value of P is less than or equal to 1200 (600 for certain hilly areas specified above) and/or value of E is less than or equal to 120 for an FSU, hg/sb formation should not be resorted to and the whole of sample FSU has to be considered for listing. It is to be noted that D will be the number of UFS blocks constituting the selected wards of the aforesaid 66 towns of Karnataka.
How to form hamlet-groups/sub-blocks ? : In case hg's/sb's are to be formed in the sample FSU, the same may be always done by more or less equalizing population (refer to chapter two for details). Please note that while doing so, it is to be ensured that the hg's/sb's formed are clearly identifiable in terms of physical landmarks. There will be no sub-block formation in the selected UFS blocks of the sample wards of the aforesaid 66 towns of Karnataka and these sample wards will be treated like FSU with sub-block formation, where sub-blocks are the UFS blocks in reality.
How to form segments 1/2 ? : After formation of hg's/sb's in large FSUs of sub-strata 1-9, the hg/sb having maximum number of sub-stratum specific establishments/OAEs (e.g. storage & warehousing establishments/OAEs for sub-stratum1, hotel establishments/OAEs for sub-stratum 2 and so on) will be selected with probability 1 and designated as segment 1. In case there is no establishments/OAEs specific to the respective sub-stratum then segment 1 will be decided on the basis of number of establishments/ OAEs specific to other sub-stratum (details may be seen in chapter 2.) After formation of hg's/sb's in large FSUs of sub-strata 10 and 11, segment 1 will be decided on the basis of total number of enterprises. If there is no enterprise at all in the large FSU of any sub-stratum, the hg/sb with maximum percentage share of population will be taken as segment 1. In case, there is more than one hg/sb satisfying the condition of labeling as segment 1, some objective criterion (details may be seen in chapter 2 ) is to be considered for selection of hg/sb to be labeled as segment 1.Two other hg's/sb's will be selected from the remaining (D-1) hg's/sb's by circular systematic sampling with equal probability. These two together will constitute segment 2 and combined listing and selection of enterprises/ households will be done.
For 66 towns of Karnataka constituent UFS blocks of the selected wards will be listed first and then two UFS blocks will be selected: one having maximum number of enterprises of the category specific to the sub-stratum will be selected with probability 1 and labeled as segment 1 and another will be selected with Simple Random Sampling out of the remaining and labeled as segment 2. In case, number of UFS blocks available in the selected block is two then both will be selected and the one having maximum number of enterprises of the category specific to the sub-stratum will be selected with probability 1 and labeled as segment 1 and the other will be labelled as segment 2. If there is only one UFS block in the selected ward this block will be selected and labeled as segment 1.
Listing and selection of enterprises/households will be done separately for segment 1 and segment 2.
FSUs not undergoing hg/sb formation will be identified as segment 1 for the purpose of processing.
It may be noted that formation of segment 9 is altogether different from that of segment 1 and segment 2.
Listing of households vis-à-vis their frame: Having determined the segments i.e. area(s) to be considered for listing, the next step is to list all the households and NAEs [including those found to be temporarily locked after ascertaining temporariness of locking of households /NAEs from local enquiry]. Although all NAEs are to be listed, only the unorganized service sector establishments/OAEs (excluding trade and finance) under 5-digited code of Tabulation categories viz H,I,K,M,N&O of NIC '98 and operated for at least 30 days (15 days for seasonal enterprises) during the reference year (i.e. last 365 days preceding the date of survey) will qualify for the survey. Such establishments/OAEs will hereafter be referred to as 'eligible establishments/OAEs'. Listing of households as well as eligible establishments/OAEs for the purpose of sample selection will be independent for segments 1 & 2 (Hereinafter enterprises will mean eligible establishments/OAEs only.)
Sampling of households (for schedule 1.0): A sample of 4 households will be selected from the households listed in the sample FSUs for canvassing schedule 1.0: Household consumer expenditure. In sample FSUs with hg/sb formation, two households will be selected from each of the two segments for this purpose. In the case of selected wards of 66 towns of Karnataka, treatment will be the same as that of sample FSU with hg/sb formation. If, however, there is a shortfall in the required number of households in a particular segment, the quota for the other segment shall be increased so that a total of 4 households is selected in all.
If the number of households (H) in the frame is less than 4 then all the households will be selected. If H =4 the households will be first arranged by their means of livelihood and then the required number of sample households will be selected circular systematically with a random start for each segment of the sample FSUs separately.
Dates of Data Collection (YYYY/MM/DD)
Mode of data collection
Use of the dataset must be acknowledged using a citation which would include:
- the Identification of the Primary Investigator
- the title of the survey (including country, acronym and year of implementation)
- the survey reference number
- the source and date of download
Example: National Sample Survey Organisation. India National Sample Survey 2001-2002 (57th Round) - Schedule 1.0 - Consumer Expenditure. Ref. IND_2001_NSS57-SCH1.0_v01_M. Data downloaded from [web] on [date].
Disclaimer and copyrights
The user of the data acknowledges that the original collector of the data, the authorized distributor of the data, and the relevant funding agency bear no responsibility for use of the data or for interpretations or inferences based upon such uses.