Bivariate Analysis
1. We ask 20 people, "What is your age?" We code the
responses as "young" and "old." We ask the same 20 people the extent
to which they agree or disagree with the statement: "Gay people should be able to
marry legally." We code the responses "agree" and
"disagree". We create the following cross-tabulation. (Note we combined the
"strongly agree" and the "agree" into AGREE, and we combined the
"strongly disagree" and the "disagree" into DISAGREE.)
Fill in the percentages on the lines NEXT TO the numbers in the table
above. Percentagize the table in a way that allows you to test the hypothesis: Young
people are more supportive of gay marriage than old people.
|
|
YOUNG
|
|
OLD
|
|
AGREE
|
8
|
_____%
|
4
|
_____%
|
DISAGREE
|
2
|
_____%
|
6
|
_____%
|
2. Write a sentence or two summarizing what you learn from the
percentagized table.
3. If the significance level for a chi-square
statistics is .17, what does that tell you about the relationship between the
two variables?
4. If the significance level for a chi-square statistics is
.007, what does that tell you about the relationship between the two variables?
5. What is your confidence level when p=.007?
6. If 45% of men support gay marriage and
there are 500 men, how many men support gay marriage?
7. If 52% of women support gay marriage
and there are 300 women, how many women support gay marriage?