A contingency table, also called a two-way table, is made up ofr rows and c columns. In general, how many cells are in acontingency table with r rows and c columns?
1) r x c (r times c)
2) (r-1)(c-1)
3) r + c
In general, how many degrees of freedom are associated with acontingency table with r rows and c columns?
1) r + c
2) r times c
3) (r-1)(c-1)
When should Fishers Exact Test be used instead of the usualchi-square test for a 2x2 contingency table?
a) if one or more of the cells has an observed frequency lessthan 5
b) n < 30
c) if one or more of the cells has an expected frequeny lessthan 5
d) np0 < 5
There are two types of tests that can be performed using acontingency table. A test of independence and a test of
a) heterogeneity
b) Relationship
c) association
d) homogeneity
