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

TRANSPOTATION, LIMITS OF TRANSPOTATION PROBLEM

LIMITS OF TRANSPOTATION PROBLEM

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

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

Information resources - selection principles, INFORMATION RESOURCES - SELEC...

INFORMATION RESOURCES - SELECTION PRINCIPLES: Selection of materials for a library requires sagacity, adroitness and attention to people's needs for everything from books and

Microforms and photographs - classification of documents, Photographs and I...

Photographs and Illustrations: Photographs and illustrations are documents which provide a visual or pictorial representation of a person, place or situation which words fail

Explain briefly the term sensitivity analysis, Question: (a) A company...

Question: (a) A company sells three different products X, Y and Z. The company makes a profit of Rs. 35, Rs. 50 and Rs. 60 per unit on products X, Y and Z respectively. The th

Demands of logic and objective procedure, The scientific methods is thus ...

The scientific methods is thus based on certain basic postulate which can be stated as under: a. It relies on empirical evidence: b. It utilizes relevant concepts;

Model, disadvantages of model in operational research

disadvantages of model in operational research

Reference books - report writing presentation , Reference Books If an ...

Reference Books If an article  in a reference  books has more  than one  author use the  same  format  for  authors  given for  books above. a. Authors Known :Authors last

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

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