Multi stage or cluster random sampling, Applied Statistics

Assignment Help:

Multi stage or Cluster Random sampling

 Under this method, the random selection is made of primary, intermediate and final units from a given population. The area of investigation is scientifically restricted to a small number of ultimate units which are representative of the whole. This will reduce the cost compared with a simple sampling from the whole area with a number of straight random selections. For example, from a population of a climatic region of the eastern states the two and south eastern from within each of these primary sampling areas a certain number of blocks May e selected are random or ultimate selection of the village for complete enumeration of households. At each stage there is a random selection and the size of sample may be proportional or disproportional depending on the size variations relevant to the purpose of inquiry.

Merits:

(1)    It introduces flexibility in the sampling method which is lacking in other methods.

(2)    This method is very helpful in large scale investigations where the preparation of list of all units of the universe is very difficult and expensive. For example  in a socio  economic survey certain families are to be selected  from different village different villages are to be selected from the list of districts  of a state  which are given ,This  is  a case of three stage sampling. It will consume time and money in the selection of items from the population.

(3)    This method is useful in such cases where sub division into second stage units be carried out only for such first stage units which are included in the sample.

Limitations:

A multi stage sample is usually less accurate than a sample containing the same number of final stage units selected by means of suitable multi stage process.


Related Discussions:- Multi stage or cluster random sampling

Carpal tunnel statistics, Cindy, the Assistant Vice President of Engineerin...

Cindy, the Assistant Vice President of Engineering/Administrative Services at Blue Cross Blue Shield Rhode Island (BCBSRI), has seen all of the OSHA statistics: In 2000, 1

Statistical generalisations, From the information given, what seems to be t...

From the information given, what seems to be the main flaw in each of the following statistical generalisations? (i) Banking industry employees are facing a crisis, if their

What are the charateristics of a population for which, what are characteris...

what are characteristics of a population for which it would be appropiate to use mean/median/mode

Interaction of enviornment and gene , entropy test to measure interaction b...

entropy test to measure interaction between enviornmental factors and genes

Continuous frequency distribution, Formation of Continuous Frequency Distri...

Formation of Continuous Frequency Distribution:    Continuous frequency distribution is most popular in practice. With reference to the formation of this type of frequency distr

Two methods of isolating trend values in a time series, a) What is meant by...

a) What is meant by secular trend? Discuss any two methods of isolating trend values in a time series.

calculate the test statistics, A manufacturer has received complaints that...

A manufacturer has received complaints that aging production equipment is forcing workers to work overtime in order to meet production quotas. Historically, the average hours worke

Calculate the standard deviation, Zinc is a trace element and it is importa...

Zinc is a trace element and it is important in wound healing, building up the immune system and DNA synthesis. The data in Table 1 represents the zinc intake (in milligrams) for a

O-give curves, real time applications on graphical representation of o-give...

real time applications on graphical representation of o-give curves

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