Given 4 two-way table, we add the total number of
individuals.

Then we divide each value of the table by the total number of individuals, finding the joint relative frequencies

Finally we add the elements of each row and column to deremine the marginal relative frequencies.

Then we divide each value of the table by the total number of individuals, finding the joint relative frequencies

Finally we add the elements of each row and column to deremine the marginal relative frequencies.