Sampling Techniques (ISS (Statistical Services) Statistics Paper III): Questions 5  11 of 30
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Question number: 5
» Sampling Techniques » Concepts in Sampling
Appeared in Year: 2009
Describe in Detail
What do you mean by sampling frame? Why do you need it? Give reasons for preferring the sampling to complete enumeration.
Explanation
Sampling frame is a list of all the elements or things in the population from which the sample is drawn.
It is a list of all those within population which can be sampled, and may include individuals, households or institutions. To cover the population there should be some list, map… (283 more words) …
Question number: 6
» Sampling Techniques » Stratified Random Sampling
Appeared in Year: 2009
Write in Short
Explain the principle of stratification. How would you determine the best mode of stratification?
Question number: 7
» Sampling Techniques » Simple Random Sampling With and Without Replacement
Appeared in Year: 2009
Describe in Detail
Describe the procedure of drawing a simple random sample of size n without replacement from a finite population of size N. obtain the probabilities of drawing specified sample in simple random sampling with and without replacement.
Explanation
Procedure of drawing Simple random sampling without replacement (SRSWOR):
In SSWOR once an element is selected as a sample unit, it will not be replaced in the population pool. The selected sample units are distinct.
A sample of size is collected without replacement from the population of size
Question number: 8
» Sampling Techniques » Cluster Sampling With SRS  IntraClass Correlation Coefficient
Appeared in Year: 2009
Write in Short
Explain cluster sampling.
Question number: 9
» Sampling Techniques » TwoStage Sampling With Equal Number of Second Stage Units
Appeared in Year: 2009
Describe in Detail
Distinguish between twostage and twophase sampling schemes. Give suitable examples.
Explanation
Two Stage Sampling:
All elements are surveyed in cluster sampling and efficiency in cluster sampling depends on size of the cluster. As the size increases, the efficiency decreases.
Rather than enumerating all the sampling units in the selected clusters, one can get better and more efficient estimators by resorting to… (280 more words) …
Question number: 10
» Sampling Techniques » Concepts in Sampling
Appeared in Year: 2010
Describe in Detail
What precautions would you take in planning for a sample survey?
Explanation
Precautions to be taken for planning sample survey:

Objectives of the survey: The first step is to define clearly the objective of the survey. The objective should be kept easy so that the people working for the survey easily understand it. The hypothesis being tested and the outcomes that will… (664 more words) …
Question number: 11
» Sampling Techniques » Simple Random Sampling and Systematic Sampling
Appeared in Year: 2010
Write in Short
A hypothetical population has the population units in linear trend given by = a (i = 1, 2, … N).
Show that: V (
V ( where N = nk
V (
Hence, deduce that