Probability and non probability sampling , Operation Research

Probability and Non  Probability Sampling

The following s are some  of the  considerations for the  selection  of probability  an non  probability  sampling.

1.Sometimes probability  considerations for  the selection probability  and non  probability  sampling: non response  is quite  high the use of probability   sampling looses its significance and non  probability  sampling  may be more appropriate.

2.When  the inquiry is to  given more objectivity and the accuracy of the investigation is to  be ensured  at some  desired level and then  the only  alternative is probability sampling.

3.Since randomness  is not  involved in non probability methods an estimate of sampling errors cannot  be made.

4. When there  are constraints of time money and availability  of appropriate sample frame   then the only  course  is non  probability sampling.  Especially in situations where  more resources are to be devoted for accurate collection of information then in  selection of the sample  units e, g,  consumer preferences  non probability  sampling is more  appropriate.

The overall  choice  between  probability  and non  probability sampling methods is a difficult is difficult exercise. The control  and measurement  of sampling  error is  probability  sampling techniques  should not be the sole  determinant of sampling procedure. The final  choice  should depend  on some  informal  judgment. The objectives of the inquiry  the nature  of the  universe resources  available  at one  disposal  may be guiding  factors in the selection  or appropriate sampling  methodology.

 

 

 

Posted Date: 2/26/2013 5:06:40 AM | Location : United States







Related Discussions:- Probability and non probability sampling , Assignment Help, Ask Question on Probability and non probability sampling , Get Answer, Expert's Help, Probability and non probability sampling Discussions

Write discussion on Probability and non probability sampling
Your posts are moderated
Related Questions
Provide a description of the macroeconomic environment in which the business operates noting: a) The overall 'stability' of the political system/government of the country in whi

On the  Basis  of Ratio of Change  Direction   a. Linear Correlation: The  correlation  between  two variables a said  to be liner if  corresponding  to a unit change in th

discuss about assignment and steps involved in it

Name the feature which is not normally associated with a Non-Governmental Organisation (NGO)?  Government funded is the organisation.

Question 1 Explain the process of problem identification with an example 2 Interview method involves a dialogue among the Interviewee and the Interviewer. Describe the inter

Case  Study - Data Analysis Sandarsen  inc was testing new  packaging  and a few  recipe  for a family  desert cookie  that had  been  on the  market for several years. It wa

explian completelly the operation reserch

What is meant by a mathematical model of a real situation? Discuss the importance of models in the solution of Operations research problems

Operation Research may be regarded as a tool which is utilized to increase the effectiveness of the management decisions. O R is objective supplement to the subjective feeling

history of modi