This

**preview**shows pages 1-2. to view the full**6 pages of the document.**1

Chi-Square test

March 27, 2012

Bring a basic calculator for the exam

Chi-square example

What social statuses predict support versus opposition to same-sex marriage?

Homosexuals should have the right to marry

Semantics influence the tone, can bias the results. Example using the homosexual

term versus gay men term. How does each word influence the results?

Example question

Is gender associated with attitudes toward same-sex marriage?

Null hypothesis: gender is independent from position.

Slide 3

•636 represent the total number who oppose

•79 represent male unsure

•316 represent female support

•606 represent total males

•1336 represent total sample

What is the expected value?

Test question: define the expected value.

Chi-square analysis (slide 4)

SOC202H1S Quantitative Analysis in Soc. Science. March 27 2012. Scott Schieman. SP. TG.

Only pages 1-2 are available for preview. Some parts have been intentionally blurred.

2

•347.5 is the number of females who oppose homosexuality if null is true.

•44.25 percentage of women who oppose same sex marriage.

•51.65 percentage of men who oppose same sex marriage.

1. What is the chi-square value needed to reject the null? 5.99.

2. We obtained chi-square of 9.2048. We are able to reject the null hypothesis at

the 0.05 and 0.01 level.

3. Can cannot reject the null hypothesis at the 0.001 level

The chi-square values are values which are of the rare percentile. Typically 0.05 or

0.01

Question 2

Is scientific knowledge related to attitudes about same-sex marriage?

Scientific knowledge: does the earth go around the sun or the sun go around the

earth?

We cannot reject the null hypothesis.

The chi is 4.8658 but the critical values at 0.05 is 5.99

Question 3

Is astrological sign associated with attitudes about same0sex marriage?

Pearson chi2(8) = 5.4861 p= 0.705

There is no significant value. There are no patterns between sign and attitude on

same-sex marriage.

Chi-square joint frequencies

ANOVA uses means. Compares average scores. Measure of variance between and

within groups

SOC202H1S Quantitative Analysis in Soc. Science. March 27 2012. Scott Schieman. SP. TG.

###### You're Reading a Preview

Unlock to view full version