Chi-square tests

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Miscellaneous

 

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Merri J

 

Date added:

February 3, 2012

 

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University

 

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A

 

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10 / 2528

 

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894 times

 

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1 Graph of ?2 distribution with differing degrees of freedom Each ?2 value is computed by the formula: ?2 = ? (O-E)2 E where O = observed counts from the sample Equation 1 and E= expected counts based on the hypothesized distribution 1.2 Types of ?2 tests and their purpose For a single population, to determine if the observed distribution in the population conforms to a specific known distribution or a previously studied distribution, the ?2 test for goodness-of-fit can be used...
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A study done to confirm this makes use of ?2 test for goodness-of-fit to determine if the observed population fits into the theoretical model. We will discuss this example in detail in the next section. To compare the distribution of two populations, the ?2 test for homogeneity of population can be used...
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