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

Survey method, This method involves a systematic and comprehensive study...

This method involves a systematic and comprehensive study of a particular community organization group etc, with a view to the analysis of a social problem and the presen

Mb0048, A PAPER MILL PRODUCES TWO GRADES OF PAPER VIZ, X AND Y. BECAUSE OF ...

A PAPER MILL PRODUCES TWO GRADES OF PAPER VIZ, X AND Y. BECAUSE OF RAW MATERIALS RESTRICTIONS, IT CANNOT PRODUCE MORE THAN 400 TONS OF GRADE X PAPER AND 300 TONS OF GRADE Y PAPER I

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

Problems based on lpp when feasible region is a line segment, Problems base...

Problems based on LPP when feasible region is a line segment or it does not exist. 1.    Maximize z = 2x+3y subject to the constraints X + y ≤ 1 X + y ≥ 3 X,  y ≥ 0

Explain the graicunas theory, Question 1 Discuss the impact of Henry Fayol...

Question 1 Discuss the impact of Henry Fayol's principles of management on the modern techniques of management with the help of suitable examples Question 2 Explain the Gary

Identify the various ways of selecting a random sample, Question 1 Discuss...

Question 1 Discuss the types of measurement scales used in research Question 2 Identify the various ways of selecting a random sample Question 3 Discuss five advan

Strategies and od intervention techniques, QUESTION 1 Change strategies...

QUESTION 1 Change strategies and OD intervention techniques follow from diagnosis. An inappropriate intervention due to a faulty diagnosis may be very costly to an organization

Least cost methods, The NW  corner  rule  described  earlier considers only...

The NW  corner  rule  described  earlier considers only  the availability  and supply  requirements  in making  assignments. It takes  no account  of the shipping  costs  given  in

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