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BST 322 week 3 Exam with verified detailed solutions

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BST 322 week 3 Exam with verified detailed solutions

Institution
BST 322
Course
BST 322

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BST 322 week 3 Exam with verified detailed solutions ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\|||




chi-square test of independence - correct answer✔✔- basic non-parametric test ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\||| ||/|\|||




- determine if two categorical variables are independent; basically if they have a relationship
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- compares the observed and expected cell frequencies of a contingency table
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expected frequencies - correct answer✔✔- we would expect to see if the subjects were
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distributed through the table randomly ||/|\||| ||/|\||| ||/|\||| ||/|\|||




observed frequencies - correct answer✔✔- those counts we literally got in the course of
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some research ||/|\|||




Yate's correction - correct answer✔✔- a variation on the chi-square test when the expected
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cell frequency in any cell in a 2x2 table
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Fisher's exact test - correct answer✔✔- a variation on the chi-square test
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- only used on a 2x2 table
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Phi coefficient - correct answer✔✔the correlation coefficient used when both measured
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variables are dichotomous and nominal ||/|\||| ||/|\||| ||/|\||| ||/|\|||




Cramer's V - correct answer✔✔- way of calculating correlation in tables which have more
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than 2x2 rows and columns
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- post-test to determine strengths of association after chi-square has determined significance
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Institution
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