Probability and non probability sampling , Operation Research

Assignment Help:

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.

 

 

 


Related Discussions:- Probability and non probability sampling

Dynamic programming models, Dynamic programming may be considered thoutgr...

Dynamic programming may be considered thoutgrowth of mathematical programming and involves the optimization of multistage( sequence of inter related decisions) decision process

Linear programming , Solve the following Linear Programming Problem using S...

Solve the following Linear Programming Problem using Simple method. Maximize Z= 3x1 + 2X2 Subject to the constraints: X1+ X2 = 4 X1 - X2 = 2 X1, X2 = 0

Operations Research, a. What do you mean by linear programming problem? Exp...

a. What do you mean by linear programming problem? Explain the steps involved in linear programming problem formulation? b. A paper mill produces two grades of paper viz., X and Y.

Microforms and photographs - classification of documents, Photographs and I...

Photographs and Illustrations: Photographs and illustrations are documents which provide a visual or pictorial representation of a person, place or situation which words fail

Institutional Characteristics - information resources, Institutional Charac...

Institutional Characteristics:  An approach to an understanding of the fields of interest of individuals to be served and of the organisation as a whole could begin by acquiri

Standard deviation - sampling decisons, Standard Deviation The  standa...

Standard Deviation The  standard deviation of samples (s) can be estimated by  the pilot  study past studies and the  ranges of distribution. A pilot study  may be  conducted

Sequencing problem, if one no. is repeated 2-3 times in machine-1 and machi...

if one no. is repeated 2-3 times in machine-1 and machine-2 what is to be prefer first

Linear programming, A paper mill produces two grades of paper viz., X and Y...

A paper mill produces two grades of paper viz., X and Y. Because of raw material restrictions, it cannot produce more than 400 tons of grade X paper and 300 tons of grade Y paper i

Linear programing problems, basic requirements for solving linear programin...

basic requirements for solving linear programing using simplex method

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd