Purposive or judgement sampling, Applied Statistics

Assignment Help:

Purposive or Judgement Sampling

Under this method of sampling, the choice  of selection of sample  items from the universe  depends exclusively on the judgement  of the investigator. For example, if 10 students form a class  of 60 students  are to be selected for the survey of  spending habits of students the 10 items  may be selected by the investigator  himself which he considers to  be representative of the whole class.

Merits:

(1)   Where small number of units is in the inverse, random selection may miss the vital elements, but this method of sampling would surely include them in a simple.

(2)   Where an investigator wishes to study some unknown traits of the universe and some of which are know. Thus  he will  stratify  the universe  according  to known elements to select  sample units form  each  stratum on the    basis  of judgement  as such   this method is used obtain  more  representative sample.

(3)   This method saves time and money both   as public officials are often pressed for time.

Limitations:

This method is unscientific since the units selected from the universe may be affected by personal bias.

The success of this method depends upon excellence in judgement, if the investigator has no good judgement, sample will not be representative. The conclusions based on sample will be wrong and erroneous.


Related Discussions:- Purposive or judgement sampling

Team Collaboration: Business Decision Making Project, Collect data about th...

Collect data about the chosen business problem or opportunity at the company. Explain how you obtained a suitable sample of either qualitative or quantitative data. Review data f

Simple regression analysis, Construct your initial multivariate model by se...

Construct your initial multivariate model by selecting a dependent variable Y and two independent variables X. Clearly define what each variable represents and how this relates t

E-mail messages should be answered quickly, Do people of different age grou...

Do people of different age groups differ in their response to e-mail messages? A survey by the Cent of the Digital Future of the University of Southern California reported that 70.

Coefficient of determination, Coefficient of Determination The c...

Coefficient of Determination The coefficient of determination is given by r 2 i.e., the square of the correlation coefficient. It explains to what extent the variation

Econometrics, implications of multicollinearity

implications of multicollinearity

SPSS Program, I have 5 observations that i must plug into spss. I need an e...

I have 5 observations that i must plug into spss. I need an example of 1. I do not know if you are familiar with SPSS but I am going to ask anyway. Subject 1 is a Hispanic male who

Binomial distribution, Binomial Distribution Binomial distribution  was...

Binomial Distribution Binomial distribution  was discovered by swiss mathematician James  Bernonulli, so this distribution is called as Bernoulli distribution also, this is a d

Recitilinear motion, velocity of a particle which moves along the s-axis is...

velocity of a particle which moves along the s-axis is given by v=2-4t+5t then find position velocity,acceleration

Correlation coefficient test, 1. If you are calculating a correlation coeff...

1. If you are calculating a correlation coefficient testing the relationship between height and weight, state the null and alternative hypotheses. 2. What kind of relationship d

Sample, You want to know the thoughts of air travelers in fields such as ti...

You want to know the thoughts of air travelers in fields such as tickets, comffort, safety, securuty, services and economic growth. You are given a database and 20 questions to ask

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