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

One sample runs test - hypothesis testing, ONE SAMPLE  RUNS  TEST A ...

ONE SAMPLE  RUNS  TEST A number of  methods have been  developed fro  judging the randomness of samples on the basis of  the order in which  teh observations  are taken. It is

Classification of models, what are the classifications of operations resea...

what are the classifications of operations research?

Steps of research process, Steps of Research Process The steps of resear...

Steps of Research Process The steps of research process have already been discussed in theory. Here we shall outline the procedure of conducting the research. i) Formulate t

Histogram and historigram, #qudistinguish between histogram and historigram...

#qudistinguish between histogram and historigram estion..

Determine capacity of unit, Show simple vapour compression Refrigeration cy...

Show simple vapour compression Refrigeration cycle with showing all the devices and also draw T-sand P-R diagram and illustrate it also. A Bell-Coleman cycle works between 1 bar

Quality circles, advantage of quality circle process

advantage of quality circle process

Type of measures of dispersion - measure of dispersion, Type  of  Measur...

Type  of  Measures  of Dispersion   a. Absolute Measure: The measure of dispersion which  is expressed in  terms of the units of the  observations( e, g, Rupees , metre ,

BIG M, Minimize: 60P + 120Q Subject to: 2P + 3Q >10 P + 4Q >12 P, Q> 0

Minimize: 60P + 120Q Subject to: 2P + 3Q >10 P + 4Q >12 P, Q> 0

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