Chi square test for independence of attribute , Operation Research

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.

Posted Date: 2/26/2013 11:36:56 PM | Location : United States







Related Discussions:- Chi square test for independence of attribute , Assignment Help, Ask Question on Chi square test for independence of attribute , Get Answer, Expert's Help, Chi square test for independence of attribute Discussions

Write discussion on Chi square test for independence of attribute
Your posts are moderated
Related Questions
Line Balancing Methods - Heuristic Approach  Heuristic mean serving to find i.e. to find out discover things for oneself. Heuristic describes a particular approach to problem so

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 i

what is meant by Application Areas of Linear Programming?

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 fin

Research and Development: All intellectual activities consciously pursued and systematically completed generate useful information. Research (also Research and Development) is

DISCUSS THE SIGNIFICANCE AND SCOPE OF OPERATION RESEARCH IN MODERN MANAGEMENT

Calculation of Ranks Correlation Where Ranks  are Given: When the  actual  ranks  are given  the steps  followed are: a.Compute  the difference  of the  two ranks  (R1 and


Test Statistic The next  step is compute an appropriate  test statistic which  is based on an appropriate probability distribution. It  is used to test whether the null  hypo

Question 1 Explain any five accessory industries Question 2 Explain the history of boots and shoes Question 3 Write short notes on following- Types of Gujarati emb