A00-485 by SASInstitute Valid Free Exam Practice Test

Question 1

In the context of linear regression, what does the term "linearity" refer to?

A. The requirement for variables to be categorical B. The use of a straight line to model relationships C. The absence of any relationship between variables D. The use of polynomial functions for modeling

Correct Answer: B

Question 2

What conditions might make models less comparable in SAS Visual Statistics?

A. If they have different learning rates B. If they have similar AUC values C. If they are both logistic regression models D. If they use the same dataset and response variable

Correct Answer: A,B

Question 3

Which statement is true about performing regressions in SAS Visual Statistics?

A. You can specify an ordinal classifier as the response variable with linear regression. B. You can build both a linear regression or a logistic regression with a generalized linear model. C. You can specify a multinomial classifier as the response variable with linear regression. D. You can build neither a linear regression nor a logistic regression with a generalized linear model.

Correct Answer: B

Question 4

In cluster analysis, what does the term "centroid" refer to?

A. The minimum distance between two clusters B. The center point of a cluster in the feature space C. The number of variables used in the analysis D. The total number of data points in a cluster

Correct Answer: B

Question 5

What is the primary goal of linear models in statistical modeling?

A. To establish a linear relationship between variables B. To classify data into distinct groups C. To capture non-linear relationships in data D. To predict categorical outcomes

Correct Answer: A

Question 6

When specifying Cluster Roles for Cluster Analysis in SAS Visual Statistics, which condition is correct?

A. Category items are not allowed. B. A target variable is required. C. At least two variables are required. D. Interaction items are allowed.

Correct Answer: C

Question 7

Which of the following are common distributions used in generalized linear models?

A. Exponential B. Normal C. Poisson D. Logistic

Correct Answer: B,C,D

Question 8

In the below linear regression results display, where would you click to access the parameter estimates?

Correct Answer:

Question 9

Refer to the exhibit:

Which option was not specified in creating the linear regression model using SAS Visual Statistics?

A. interaction term B. variable selection C. group-by variable D. continuous effects

Correct Answer: C

Question 10

When performing a logistic regression in SAS Visual Statistics, the default prediction cutoff is .50. If you increase the cutoff to .80 then derive predicted values, which statement is the expected outcome?

A. The predicted events decrease and the predicted probabilities remain unchanged. B. The predicted events remain unchanged and the predicted probabilities decrease. C. The predicted events remain unchanged and the predicted probabilities increase. D. The predicted events increase and the predicted probabilities remain unchanged.

Correct Answer: A

Question 11

When interpreting an Influence plot, what does it typically show?

A. The effect of each predictor variable on the response B. The relationship between the response variable and the intercept term C. The distribution of residuals in the model D. The interaction between two predictor variables

Correct Answer: A

Question 12

When performing linear regression modeling, what is the primary goal of assessing multicollinearity among predictors?

A. To calculate the coefficient of determination (R-squared) B. To detect non-linear relationships C. To identify influential outliers D. To ensure that predictor variables are not highly correlated

Correct Answer: D

Question 13

When building a cluster analysis in SAS Visual Statistics, which of the following algorithms is commonly used for partitioning data into clusters?

A. Principal Component Analysis (PCA) B. Linear Regression C. K-means D. Decision Tree

Correct Answer: C

Question 14

When assigning roles in a GLM, what does the "offset" variable typically represent?

A. A variable used to adjust the intercept B. A variable with a known constant coefficient C. A predictor variable D. The target variable

Correct Answer: A,B

SASInstitute Modeling Using SAS Visual Statistics - A00-485 Exam Practice Test