SASInstitute SAS Certified Statistical Business Analyst Using SAS 9: Regression and Modeling Credential - A00-240무료 덤프문제 풀어보기
Given the following GLM procedure output:
Which statement is correct at an alpha level of 0.05?
Which statement is correct at an alpha level of 0.05?
정답: C
Refer to the exhibit:
An analyst examined logistic regression models for predicting whether a customer would make a purchase.
The ROC curve displayed summarizes the models. Using the selected model and the analyst's decision rule,
25% of the customers who did not make a purchase are incorrectly classified as purchasers.
What can be concluded from the graph?
An analyst examined logistic regression models for predicting whether a customer would make a purchase.
The ROC curve displayed summarizes the models. Using the selected model and the analyst's decision rule,
25% of the customers who did not make a purchase are incorrectly classified as purchasers.
What can be concluded from the graph?
정답: A
Refer to the exhibit.
Output from a multiple linear regression analysis is shown.
What is the most appropriate statement concerning collinearity between the input variables?
Output from a multiple linear regression analysis is shown.
What is the most appropriate statement concerning collinearity between the input variables?
정답: C
Which SAS program will detect collinearity in a multiple regression application?
정답: D
A linear model has the following characteristics:
* A dependent variable (y)
* Three continuous predictor variables (x1-x3)
* One categorical predictor variable (c1 with 3 levels)
Which SAS program fits this model?
* A dependent variable (y)
* Three continuous predictor variables (x1-x3)
* One categorical predictor variable (c1 with 3 levels)
Which SAS program fits this model?
정답: B
Screening for non-linearity in binary logistic regression can be achieved by visualizing:
정답: A
A researcher is planning a logistic regression to model the probability of disease occurrence. The researcher determines the rate of disease occurrence in the population is 1%.
For which of the following would this study be a candidate?
For which of the following would this study be a candidate?
정답: A
A non-contributing predictor variable (Pr > |t| = 0.658) is removed from an existing multiple linear regression model.
What will be the result?
What will be the result?
정답: D
Refer to the following exhibit:
What is a correct interpretation of this graph?
What is a correct interpretation of this graph?
정답: C
Which SAS program will correctly use backward elimination selection criterion within the REG procedure?
정답: D