8 Examine the formula for the chi-square statistic x². a. If two samples are identical, what is the value of x²? Justify your answer. b. Why is it necessary to square the difference O - E? Justify your answer by giving an example of what happens if you do not.
8 Examine the formula for the chi-square statistic x². a. If two samples are identical, what is the value of x²? Justify your answer. b. Why is it necessary to square the difference O - E? Justify your answer by giving an example of what happens if you do not.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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The Chi-square test can be used to compare the distribution of a qualitative variable in one sample with that of a qualitative variable in another sample.
The Chi-square test statistic is defined as follows for the test:
,
where is the observed and expected value, respectively.
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