FILL BLANK
Refer to the REG procedure output:
How many observations are used in the analysis? Enter your numeric answer in the space below.
FILL BLANK
Refer to the REG procedure output:
Calculate the coefficient of determination, R-Square.
Enter your numeric answer in the space below. Round to 4 decimal places (example: n.nnnn).
DRAG DROP
Drag the adjustment formulas for oversamping from the left and place them into the correct location in the confusion matrix shown on the right.
Select and Place:
Refer to the ROC curve:
As you move along the curve, what changes?
A. The priors in the population
B. The true negative rate in the population
C. The proportion of events in the training data
D. The probability cutoff for scoring
Screening for non-linearity in binary logistic regression can be achieved by visualizing:
A. A scatter plot of binary response versus a predictor variable.
B. A trend plot of empirical logit versus a predictor variable.
C. A logistic regression plot of predicted probability values versus a predictor variable.
D. A box plot of the odds ratio values versus a predictor variable.
An analyst investigates Region (A, B, or C) as an input variable in a logistic regression model.
The analyst discovers that the probability of purchasing a certain item when Region = A is 1.
What problem does this illustrate?
A. Collinearity
B. Influential observations
C. Quasi-complete separation
D. Problems that arise due to missing values
Refer to the REG procedure output:
Click on the calculator button to display a calculator if needed.
A. 0.4115
B. 0.6994
C. 0.5884
D. 0.1372
Identify the correct SAS program for fitting a multiple linear regression model with dependent variable (y) and four predictor variables (x1-x4).
A. Option A
B. Option B
C. Option C
D. Option D
Refer to the following odds ratio table:
What is a correct interpretation of the estimate?
A. The odds of the event are 1.142 greater for each one dollar increase in salary.
B. The odds of the event are 1.142 greater for each one thousand dollar increase in salary.
C. The probability of the event is 1.142 greater for each one dollar increase in salary.
D. The probability of the event is 1.142 greater for each one thousand dollar increase in salary.
Given the following LOGISTIC procedure:
What is the difference between the datasets OUTFILEJ and OUTFILE_2?
A. OUTFILE_1 contains the final parameter estimates while OUTFILE_2 contains the newly scored probabilities.
B. OUTFILE_1 contains the model goodness of fit statistics while OUTFILE_2 contains the newly scored probabilities
C. OUTFILE_1 contains the model goodness of fit statistics while OUTFILE_2 contains the newly scored logits.
D. OUTFILEJ contains the final parameter estimates and Wald Chi-Square values while OUTFILE_2 contains the newly scored probabilities.
The following LOGISTIC procedure output analyzes the relationship between a binary response and an ordinal predictor variable, wrist_size Using reference cell coding, the analyst selects Large (L) as the reference level.
What is the estimated logit for a person with large wrist size?
Click the calculator button to display a calculator if needed.
A. 0.0819
B. 0.5663
C. -3.7727
D. -1.0415
A marketing manager attempts to determine those customers most likely to purchase additional products as the result of a nation-wide marketing campaign.
The manager possesses a historical dataset (CAMPAIGN) of a similar campaign from last year.
It has the following characteristics:
1.
Target variable Respond (0, 1)
2.
Continuous predictor Income
3.
Categorical predictor Homeowner(Y, N) Which SAS program performs this analysis?
A. Option A
B. Option B
C. Option C
D. Option D
A marketing analyst assessed the effect of web page design (A, B, or C) on customers' intent to purchase an expensive product. The focus group was divided randomly into three sub-groups, each of which was asked to view one of the web pages and then give their intent to purchase on a scale from 0 to 100. The analyst also asked the customers to give their income, which was coded as: I (lowest), II (medium), or III (highest). After analyzing the data, the analyst claimed that there was significant interaction and the webpage design mainly influenced high income people.
Which graph supports the analyst's conclusion?
A. Option A
B. Option B
C. Option C
D. Option D
Refer to the exhibit.
These graphs were created using the GLM procedure with the plots(only)=diagnostics option.
Which plot do you use to identify influential observations?
A. Cook's D by Observation
B. Residual by Quantile
C. Residual by Predicted
D. Fit - Mean and Residual Plot
This question will ask you to provide a segment of missing code.
The following code is used to create missing value indicator variables for input variables, fred1 to fred7.
Which segment of code would complete the task?
A. Option A
B. Option B
C. Option C
D. Option D