Non parametric tests - hypothesis testing, Operation Research

Assignment Help:

NON PARAMETRIC TESTS

All  practical  data follow normal distribution under  such situations can estimate the  parameters such  as mean  variance etc ,,, and use the  standard  test they are  known as parametric test. The practical data may be non normal and or it may not be possible to estimate the  parameter of the data. The tests  which  are sued for such  situations are called  nonparametric tests. Since  these  tests  are  based  on the  data which  are free  distribution and parameter these  tests are known as nonparametric  tests.

The  nonparametric  tests require less calculation because there is no need to compute  parameters. Also  these  test can  be applied to very  small samples more specifically during pilot   studies in market research.

The  test techniques  makes  use of  or more values obtained from  sample data often called test statistic to arrive at a probability statement about  the hypothesis. But  no such  assumptions are  made in  case of  nonparametric  tests. In a statistical test two kinds of  assertions  are involved viz... an  assertion directly  related to the  purpose of investigation and  other assertions to make  a probability  statement. The  former  is an  assertion to be tested  and is technically called a hypothesis whereas the set  of al other assertions  is  called the model. When we apply a test to ( to test the hypothesis ) without  a model it is known as  distribution free test or the non parametric test. Non  parametric tests do not make an assumption  about  the parameters of the population  and thus do not make an assumption distribution. In other  words under nonparametric or distribution free tests  we do not  assume that a  particular distribution is applicable  or that a certain value is attached to a parameter of the  population.


Related Discussions:- Non parametric tests - hypothesis testing

Development of lp problems, A company manufactures 2 kinds of hats. Each ha...

A company manufactures 2 kinds of hats. Each hat of the I type needs twice as much as labour time as the II type. The company can manufacture a sum of 500 hats a day. The market re

Post-optimal analysis, It can be seen from the optimal solution for the fou...

It can be seen from the optimal solution for the foundry problem that two resources, raw material-1 and labor, are exhausted whereas the other two resources, raw materi

Vogel''s approximation method, I''m getting a negative value in the one of ...

I''m getting a negative value in the one of the Supply/Stock columns while solving a problem in Vogel''s approximation method. Is it possible or am I doing anything wrong?

Question, i need many good and important question of operation research obo...

i need many good and important question of operation research obout dinamic programing and non-liner programing and integer orograming ....for study! thank you

Deweys principle - information resources, Dewey's Principle: Melvil De...

Dewey's Principle: Melvil Dewey's principle states: "The best reading for the largest number at the least cost" According to this principle a library should select, within the

OPTIMAL ASSIGNMENT., Six Operators are to be assigned to five jobs with the...

Six Operators are to be assigned to five jobs with the cost of assignment in Rs. given in the matrix below. Determine the optimal assignment. Which operator will have no assignment

Compute the joining, The Best Corporation is considering making either mino...

The Best Corporation is considering making either minor or major repairs to a malfunctioning production process.  When the process is malfunctioning, the percentage of defective it

Assignment, Six Operators are to be assigned to five jobs with the cost of ...

Six Operators are to be assigned to five jobs with the cost of assignment in Rs. given in the matrix below. Determine the optimal assignment. Which operator will have no assignment

Seven step to a successful presentation, Seven Step to a Successful Present...

Seven Step to a Successful Presentation There  are seven  basic  step which  need to  kept  in mind at the  time of  making  a presentation. How  successful one  is at eh end

Methods of scientific research, Methods is a tool or a techniques used t...

Methods is a tool or a techniques used to collect data. It is procedure for obtaining knowledge based on empirical observation and logical reasoning. Field Study Metho

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