BUSN 4000 Exam 2 Exam with complete solutions
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1. When does multicollinearity occur in a multiple regression analysis?: VIF for
variable is higher than 10
2. leverage: used to see which observations have the potential to attect regression line due to extreme placement
on x-axis
not necessarily exert undue influence on the line
3. Cook's D: used to see which data point is most influential on the regression line due to extremity in both x and
y directions
4. what variable is not coded into a model?: reference group
5. df of regression: k
6. df of residual (dFe): n-k-1
7. df of total: n-1
8. MS of regression: ssr/k
ss of regression / df of regression
9. MS of residual (MSe): sse/n-k-1
ss of residual / df of residual
10. F-Statistic on ANOVA table: MSR/MSE
11. k: number of variables in FULL model
12. l: number of variables in the REDUCED model
13. F-Test: How to Get P-Value in Excel: F.Dist.RT (F stat, df of regression, dr of residual)
BRAINSCAPE1