Midterm II Review

Definitions

100

a table that summarizes the relationship between two or more categorical variables by displaying frequency counts (hint: it gets complicated because they mix)

what is a contingency table?

200

the number of balues that are free to vary once some constraints are in place

what is a degree of freedom?

Equations

100

x²=sum (O-E)^2/E

what is the chi squared contingency test?

200

P(A AND B)=P(A)xP(B)

and is times

what is independent?