chi-square Flashcards

1
Q

the chi-square can be used to determine is some numbers of observed values differ from the set of

A

expected values

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2
Q

what is the chi-square that can be used to determine if some numbers of observed values differ from a set of expected values

A

goodness of fit

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3
Q

the chi-square can also be used to tell if one category is dependent on another , this is called

A

contingency

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4
Q

what is good of fit test compare

A

two categories to an expected distribution, there is no theoretical limit to the number of categories

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5
Q

what is the biggest requirement of the chi-square is that

A

no cell should have an expected value of less than 5

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6
Q

the contingency test is used to determine if

A

one variable is contingent/ dependent on another

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7
Q

the contingency test checks to see if there is a

A

relationship between the two variables; it does not require that you have exactly the same number of males and females to do this

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8
Q

degrees of freedpm

A

(rows-1) (columns-1)

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9
Q

the goodness of fit tests asks if a distribution of observed freuqncies matches

A

an expected set of frequencies

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10
Q

what is a special- case for a 2x2 contingency table that produces an exact p-value

A

fishes exact test

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