Assignment 6: Bivariate and Multiple Regression
Using the class_survey dataset, you are going to address the following research
questions:
- Do scores on the BSSS predict alcohol use?
State your null and research hypothesis.
Conduct regression analysis in SPSS to determine if scores on the BSSS Total
(BSSSTotal) predict alcohol use (Alcohol). Write up the findings from the SPSS
output in paragraph format. Report and interpret the r-squared value,
unstandardized and standardized regression coefficients (direction, change in Y
given X, significance – see below for examples).
Dependent variable = Alcohol
Independent variable/predictor = BSSSTotal
State your conclusion in terms of the null hypothesis. - Do scores on the BSSS predict alcohol use controlling for age, gender, ethnicity,
cigarette use, and callous-unemotional traits?
State your null and research hypothesis.
Based on prior research, we believe that age, gender, ethnicity (Latino vs. Non-
Latino), cigarette use, and CU traits (ICUTotal) may also be important in
predicting alcohol use. Conduct multiple regression in SPSS controlling for these
variables to determine if the association between the BSSS total and alcohol use
still holds.
Write up the findings from the SPSS output in a single paragraph (do not use bullet
points). Your paragraph should include: (1) interpretation of the r-squared value,
(2) which variables are and are not significant, (3) report unstandardized and
standardized regression coefficients for significant variables only (direction,
change in Y given X, significance – see below for examples), and (4) discuss the
relative effects for any significant predictors (i.e., compare the effects using the
standardized regression coefficients). Statistics should be reported in the proper
format (see examples provided below).