Homework on Chi Square and correlation
Homework on Chi Square and correlation
Calculating Chi square
1) This time you will use the data set GSS2002 that is located in the Pollock’s book companion CD.
2) You will run a cross-tabulation of the following variables: Respondent’s sex (SEX) and Gore or Bush 2000? (PRES00_2)
3) Calculate X2 by hand and then corroborate your results using SPSS (turn in both outputs and show your work)
4) How many degrees of freedom exist?
5) What is the CV to reject the hypothesis of no relationship?
6) Are your results statistically significant? Interpret your results.
7) Select two variables and perform X2 test, using only SPSS, and interpret your results.
Correlation coefficient
1) Use the data provided to you and calculate the correlation coefficient between the total number of medals (TOTAL), won by a country in the Olympics, and the inverse rank of the United Nations Human Development Index (INVRANK).
2) Corroborate your results in SPSS (using bivariate correlation)
3) What correlation coefficient did you get and what would you say about it?
4) Go to graphs in SPSS and ask for a scatterplot simple. Decide what goes on X (independent variable) and what goes on Y (dependent variable). Does your relationship look linear and what that means?
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