Correlations and Chi-Squares in SPSS

Lab Assignment 5

Correlations and Chi-Squares in SPSS

1. Test the research hypothesis that college students who report spend more evenings during socializing with friends during the semester tend to reporting lower 1st year GPAs.

Data Analysis:

a. Considering the RH: -- Does this research hypothesis suggest a positive, a negative, or no relationship between these variables? Explain.

State the null hypothesis

b. Examining the Scatterplot -- follow the handout to get the scatterplot of these variables (put GPA on the Y axis)

· Is the relationship clearly nonlinear? What would we do (or not do) of there was a nonlinear relationship?

· Does the "direction" of the scatterplot seem to support the RH:? Why or why not?

c. Statistical analysis -- follow the handout to get the Pearson's correlation between these variables

For the 1st year GPA mean = _____________ std = _____________ N = _____________

For the # nights mean = _____________ std = _____________

r = __________________ df = __________ p = ____________

Retain or reject the null ? Support research hypothesis ?

Draw the Picture – Given the r-value and p-value, draw the graph.

Write-up in APA style -- follow the example in the SPSS how-to and page 257 of the Research Design and SPSS book, including the mean and std for each group in the write-up.

2. Test the research hypothesis that, among college students, men tended to have voted in the last student government election whereas women are about equally divided between those who vote and those who didn't vote.

State the null hypothesis:

Data Analysis -- follow the handout to get the Pearson's X² between these variables

Number of males in the sample _______________number of females ___________________

Number who voted in the sample _____________number who didn't vote___________________

X² = __________________ df = __________ p = ____________

Retain or reject the null? Support research hypothesis?

Write-up in APA style -- follow the example in the SPSS how-to and page 261 of the Research Design and SPSS book.

NOTE: Get back to me ASAP using ( [email protected] ) if you can deliver within 3 hours thanks