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central

Survey of Disabled Persons , July-Dec 1990
NSS 47th Round

India
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Reference ID
IND-NSSO-SDP-1991-v1.0
Producer(s)
National Sample Survey Office
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Other Surveys
Metadata
DDI/XML JSON
Created on
Jan 16, 2018
Last modified
Mar 27, 2019
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Sub Sample (Sub_Sample)

Data file: Block 6_Particulars of enrolment of physically disabled of age 5-14 years

Overview

Valid: 0
Invalid: 0
Type: Discrete
Start: 30
End: 30
Width: 1
Range: -
Format: character

Questions and instructions

Literal question
Sub Sample
Categories
Value Category
1 Central sample
2 State sample
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.

Description

Definition
An important feature of the NSS sampling design is that the total sample of first stage units is drawn in the form of two or more independent and parallel samples, termed as interpenetrating sub-samples. Each sub- sample is drawn by the same sampling scheme and is capable of providing valid estimates of the population parameters. The comparison of sub-sample wise estimates shows the margin of uncertainty associated with the combined sample estimate.

Interpenetrating sub-samples have been used in NSS (i) to obtain valid estimates from each sub-round (season) of the survey round, and (ii) to ensure that Central and State samples for any State/ UT cover independent and equally valid samples of units.

The samples surveyed by the NSSO staff are termed as Central sample and the matched samples surveyed by State Government staff are termed as State sample.
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