l T-Mobile LTE 3:00 PM Done 9 of 16 SYC 004 Final de- 27. Logstic regression is
ID: 3318407 • Letter: L
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l T-Mobile LTE 3:00 PM Done 9 of 16 SYC 004 Final de- 27. Logstic regression is used to predict the probability of a leved of a indapendent variables. Bdow, chooses pendent variable given levels of the alternative that best suits these blanks bcateoncal, numerical c numerical; either or both of numerical and categorical d. numerical; cat egorical ian ane would not make when carrying out a botween Whic ot the fdilowing is an assumpt subjects ANOVA? 28 a Observations are normally distributed within each group. b. The distribution of within-group observatians has const ant variance across groups c There is a linear trend in the dependent variable across levels of each independent variable d·Obsrvationsarestatistically independent of each other. 29 Which of the tallawing best suits the rason why ANOVA requires the homagansity of vari- a Beausthe resuits df ANOVA aresctremay senstive to even sightly unequali varilanos b. Because it does not make sense to compare the means of distributions if the spreads cf c Because unless the sample varianoes are similar across groups the computation of the d. Because assuming the homogenety of variances makes our descaription of data more 30. Choose two words that are best suited to the following blanks in the numerat or and danomi- ances? across groups the distributions are very different from each at har F-statistic itself is not poss ble detaled nator, respectively variability due to variability due to per dagrae of freedom per degree of freedom a individual difforances random effect b. between-group differences; between-group similarities c effect; random erra d. random effect; syst enatic error 4 ]Explanation / Answer
27) Answer: Option A, categorical, either or both numerical and categorical
In logistic regression, the dependent variable is always categorical but the independent variables can be numerical or categorical
28) Option C. THere is a linear trend in the dependent variable across levels of each independent variable
29) If group sizes are vastly unequal and homogeneity of variance is violated, then the F statistic will be biased when large sample variances are associated with small group sizes.
Answer: Option A
30) Answer: Option B
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