Z-test - hypothesis testing, Operation Research

Assignment Help:

Z-Test

Prof. Fisher has  given a method  of testing the significance of the correlation coefficient in small  samples. According  to this method the  coefficient of correlation is transformed into Z  and hence the  name  transformation. The statistic Z given by  prof. Fisher is used  to test:

a.Whether  an observed value  of r differs significantly from some  hypothetical value or.

b.Whether two samples values of  r differ significantly,

For  testing whether r differs significantly from zero the t- test is preferable.

In order to apply the test  we have to calculate Z and by applying Fisher transformation and then  calculate the  value  of the standard  normal  variate.

                 Z- ε / 1/√n-3


Related Discussions:- Z-test - hypothesis testing

Non-documentary sources and institutional resources, Non-Documentary Source...

Non-Documentary Sources: On the other hand, non-documentary sources are institutional and human resources, both of which are important links in the information-transfer chain.

Operation research, different classification of models in operation researc...

different classification of models in operation research

Bibliography format - report writing presentation , Bibliography Format ...

Bibliography Format a. Introduction : Bibliographies  tell  readers  where they can  locate  information  about  a topic. It is a list of sources  of information  for a repo

Expected value analysis, Profitable Casino Corp. (PCC) is a Harrah's wannab...

Profitable Casino Corp. (PCC) is a Harrah's wannabe, intent on mimicking Harrah's analytical marketing techniques.  For example, PCC issues virtually all gamers a PCC "Rewards" car

Research paper, Research Paper Overview Research Topic: •    Research ...

Research Paper Overview Research Topic: •    Research the effects of federal mandates in your state.  Examples include the Americans with Disabilities Act, the No Child Left B

Relationship between media producers and audiences, 1. We have looked at a ...

1. We have looked at a number of theories explaining the nature of the relationship between media producers and audiences. Give a detailed description of at least three of these ap

Uncertainly, Uncertainly : There is a great uncertainly about economic a...

Uncertainly : There is a great uncertainly about economic and general environment. With economic growth uncertainty is also growing's. this makes each decisions costlier

Summary report - report writing presentation, Summary  Report The  r...

Summary  Report The  report  format  suggested  above  does  not  contain  any  summary  section. This exclusion  is deliberate. The summary  should  not be  prepared until t

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