Sequential sampling -sampling decisons, Operation Research

Assignment Help:

Sequential Samplin

The previous  has shown  that the sampling  units  were drawn  prior  to the drawing of the actual   sample  and has  a fixed  size. But the  sequential  sampling  known  as  sampling analysis differs  from  the previous  samples in the sense that it  does not make  an advance determination  of the sample size. In  this case the  researcher  obtains measurements on  one  unit  or the population at a single time. A group  of population  units is  also measured  at a time. The measurement of each group  are cumulated. With the  probable error and the cumulated results the size of the  sample can  be decided. If  the error is too  large  the study  of additional groups  continues until  the standard  error is reduced  to a minimum level.

The  sample  size may  vary  according  to the need  of the  management and standard error. It is  not fixed in test the  hypotheses sequential  sampling  reduces the required  sample size as compared to the fixed sampling. When the sequential  sampling  is applied  the survey costs  may be reduced. The utility of  sequential sampling in marketing is not very useful because there is need of a randomly selected  sample or  cross section study. No small  group  of sample  will  be sufficient. There may be  need of  additional groups of samples to  reduce standard  error which may  involves  more cost. By the  time the  nest sample  is taken  into study  the report  of the  previous study  may be outdated. Considering the  utility of the  continuing  sampling the sequential  sample  is utilized in  the marketing  study.

 


Related Discussions:- Sequential sampling -sampling decisons

Poisson Process, Telephone calls arrive at a switchboard in a Poisson proce...

Telephone calls arrive at a switchboard in a Poisson process at the rate of 2 per minute. A random one-tenth of the calls are long distance. (a) What is the probability of at least

Operation research, Model building is the essence of operation research app...

Model building is the essence of operation research approach. Comment

Replacement models - operation research model, These models are used whe...

These models are used when one must decide the optimal time to replace equipment for one reason or the other for instance, in the case of equipment whose efficiency dete

Scope, With practical example

With practical example

Students t distribution - hypothesis testing, Normal 0 false ...

Normal 0 false false false EN-IN X-NONE X-NONE

C, classification on the bases of function or purpose

classification on the bases of function or purpose

Do it - report writing presentation , Do it  Everything  about  the...

Do it  Everything  about  the presentation is  ready and so  are you. The only  things  left if to face the audience in a confident and positive  manner and leave a mark on

Macroeconomic environment in which the business operates, Provide a descrip...

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

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