HELP SPSS
V16 (Dem candidate) as your DV, V18 (FT-Dem Party) as your IV
Interpret the intercept, slope and R-square values
V17 as your DV, V19 (FT-Rep Party) as your IV
Interpret the intercept, slope and R-square values
Which is the better predictor—V18 (for Clinton) or V19 (for Trump) Why? What values are you comparing?
Suggest why one is a better predictor than the other
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TASK 3:
Same Procedure, but multiple regression and use of a ‘dummy’ variable.
• Just as with an ordinal interpretation, a dichotomy can be used in an interval analysis.
Perform two 3-variable linear regressions
V16 as your DV, V18 and (V79) IV as your IVs
Interpret the intercept, slope s and R-square values
How much does your V79 (ILLEGAL IMMIGRANTS) IV add to explaining the variance of V16 (above V18)?
Which IV explains more of the variance of the DV? Why? What values are you comparing?
V17 as your DV, V19 and your selected (V79) IV as your IVs
Interpret the intercept, slope s and R-square values
Which IV explains more of the variance of the DV?
Why? What values are you comparing?
How much does your chosen (V79) IV add to explaining the variance of V17 (above V19)?
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TASK 4:
Same Procedure, but 2‐variable regression and your IV investigated for specification effects. Just as with Simpson’s Paradox, relationships of subsets can be hidden.
•
Perform 2 two‐variable linear regressions with control
o V16 as your DV, V18 (FT-Dem Party) as your IV,
but separately for each category of your IV.
Interpret the intercept, slope and R-square values for each of your IV categories Compare the two—for which of your IV categories is V18 a better predictor of
V16?
V17 as your DV, V19 (FT-Rep Party) as your IV,
but separately for each category of your IV
Interpret the intercept, slope and R-square values Interpret the intercept, slope and R-square values for each of your IV categories
Compare the two—for which of your IV categories is V19 a better predictor of V17?