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Genetics 5th Edition by Leland Hartwell ,Michael Goldberg,Janice Fischer ,Leroy Hood,Charles Aquadro
Edition 5ISBN: 978-0073525310Genetics 5th Edition by Leland Hartwell ,Michael Goldberg,Janice Fischer ,Leroy Hood,Charles Aquadro
Edition 5ISBN: 978-0073525310 Exercise 3
The general protocol for using the chi-square test for goodness of fit and evaluating its results can be stated in a series of steps. Two preparatory steps precede the actual chi-square calculation.
Table 5.2 Critical Chi-Square Values
To calculate chi square, begin with one class of offspring. Subtract the expected number from the observed number to obtain the deviation from the predicted value for the class. Square the result and divide this value by the expected number.
Do this procedure for all classes and then sum the individual results. The final result is the chi-square ( 2 ) value. This step is summarized by the equation:
where means "sum of all classes."
Table 5.2 Critical Chi-Square Values
To calculate chi square, begin with one class of offspring. Subtract the expected number from the observed number to obtain the deviation from the predicted value for the class. Square the result and divide this value by the expected number.
Do this procedure for all classes and then sum the individual results. The final result is the chi-square ( 2 ) value. This step is summarized by the equation:
where means "sum of all classes."
Explanation
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Genetics 5th Edition by Leland Hartwell ,Michael Goldberg,Janice Fischer ,Leroy Hood,Charles Aquadro
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