chi-square Flashcards
the chi-square can be used to determine is some numbers of observed values differ from the set of
expected values
what is the chi-square that can be used to determine if some numbers of observed values differ from a set of expected values
goodness of fit
the chi-square can also be used to tell if one category is dependent on another , this is called
contingency
what is good of fit test compare
two categories to an expected distribution, there is no theoretical limit to the number of categories
what is the biggest requirement of the chi-square is that
no cell should have an expected value of less than 5
the contingency test is used to determine if
one variable is contingent/ dependent on another
the contingency test checks to see if there is a
relationship between the two variables; it does not require that you have exactly the same number of males and females to do this
degrees of freedpm
(rows-1) (columns-1)
the goodness of fit tests asks if a distribution of observed freuqncies matches
an expected set of frequencies
what is a special- case for a 2x2 contingency table that produces an exact p-value
fishes exact test