Chi square test for independence of attribute , Operation Research

Assignment Help:

Chi Square Test for Independence  of Attribute

The chi square  test  can be  used to find out  whether two  or more attributes are associated or not. This  test helps  in finding the association or  independence of two  or more  attributes. In  order  to test  the independence  of two  attributes  you should take  the null  hypothesis that the two attributes  are  independent. The second  step under  null  hypothesis is to  compute the expected frequencies for  each  cell of  contingency table. In  case of  contingency table  the expected frequency  for ( A1, B1) will be  calculated as:

E ( A1, B1)  = (A1) (B1) / N

After computing expected frequencies you can  calculate the value  of chi square . the   calculated  value  of chi square  will be then compared with  table value at certain level of significance ( usually at 5% for  ( r- 1) ( c-1) degree of freedom. If  the calculated value  is lower than table  value then you will  accept the  null hypothesis  that two  attributes are independent. In case  calculated  value is greater than  the table value  then the  null hypothesis will be  rejected and you will  conclude that two  attributes are associated.


Related Discussions:- Chi square test for independence of attribute

Help me please , This year Jan Rich, who is ranked number one in women''s s...

This year Jan Rich, who is ranked number one in women''s singles in tennis, and Marie Wacker, who is ranked number three, will play 4 times. If Marie can beat Jan 3 times, she will

LPP using Simple method, Maximize Z= 3x1 + 2X2 Subject to the constraints: ...

Maximize Z= 3x1 + 2X2 Subject to the constraints: X1+ X2 = 4 X1 - X2 = 2 X1, X2 = 0

Carry out resource levelling for equipment resource, Teesside Construction ...

Teesside Construction is developing a schedule for a major building project to start in 04/01/2011 in Middlesbrough, UK. The project manager has identified major activities of the

How to solve operation research optimization questions, how to solve operat...

how to solve operation research optimization questions

A paper mill produces, . A paper mill produces two grades of paper viz., X ...

. 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 paper

#transportation and linear models.., #what is the similarity and difference...

#what is the similarity and differences between transportation and linear programing models?

Game theory, if there were n workers and n jobs there would be

if there were n workers and n jobs there would be

Regression equations - correlation regression analysis, Regression Equation...

Regression Equations The   regression equations express the regression line. As there are two regression lines so there  are two  regression  equations. The regression equatio

Scientific research, Scientific research is building of knowledge throug...

Scientific research is building of knowledge through collection of empirically verifiable facts. The term verifiable here means which can be checked by others for accuracy

Model, Importance of models

Importance of models

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