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

Software, role of computer software operation research

role of computer software operation research

Do it - report writing presentation , Do it  Everything  about  the...

Do it  Everything  about  the presentation is  ready and so  are you. The only  things  left if to face the audience in a confident and positive  manner and leave a mark on

Goal programming, Goal Programming This provides a more realistic model...

Goal Programming This provides a more realistic model. In a modern setting, profit maximization may not be the only objective of a business concern. Other objectives or goals c

Linear programming, 3. A paper mill produces two grades of paper viz., X an...

3. A paper mill produces two grades of paper viz., X and Y. Because of raw material restrictions, it cannot produce more than 400 tons of grade X paper and 300 tons of grade Y pape

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.

Using software for analysis grouping, Using   Software for Analysis Group...

Using   Software for Analysis Grouping and Displaying Data   to Convey Meaning Normal 0 false false false EN-IN X-NONE X-NONE

Components included in the reseach proposal, Components Included in the Pro...

Components Included in the Proposal Personnel In case the proposal is addressed to the funding agencies, the qualifications of the key project personnel for study should be

Quality circles, advantage of quality circle process

advantage of quality circle process

Please semd ans., A paper mill products two grade of paper viz., X & Y. Bec...

A paper mill products two grade of paper viz., X & Y. Because of raw material restriction, it cannot produce more than 400 tons of grade X paper & 300 tons of grade Y paper in a we

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