SAS A00-240 Exam Practice Test Instant Access

Question 1

Refer to the exhibit:

SAS output from the RSQUARE selection method, within the REG procedure, is shown. The top two models in each subset are given.

Based on the AIC statistic, which model is the champion model?

AAge Weight RunTime RunPulse MaxPulse

BAge Weight RunTime RunPulse RestPulse MaxPulse

CRestPulse

DRunTime

Answer : A

Question 2

This question will ask you to provide a missing option.

A business analyst is investigating the differences in sales figures across 8 sales regions. The analyst is interested in viewing the regression equation parameter estimates for each of the design variables.

Which option completes the program to produce the regression equation parameter estimates?

ASolve

BEstimate

CSolution

DEst

Answer : C

Question 3

Refer to the exhibit:

The box plot was used to analyze daily sales data following three different ad campaigns.

The business analyst concludes that one of the assumptions of ANOVA was violated.

Which assumption has been violated and why?

ANormality, because Prob > F < .0001.

BNormality, because the interquartile ranges are different in different ad campaigns.

CConstant variance, because Prob > F < .0001.

DConstant variance, because the interquartile ranges are different in different ad campaigns.

Answer : D

Question 4

Refer to the exhibit:

Based upon the comparative ROC plot for two competing models, which is the champion model and why?

ACandidate 1, because the area outside the curve is greater

BCandidate 2, because the area under the curve is greater

CCandidate 1, because it is closer to the diagonal reference curve

DCandidate 2, because it shows less over fit than Candidate 1

Answer : B

Question 5

Spearman statistics in the CORR procedure are useful for screening for irrelevant variables by investigating the association between which function of the input variables?

AConcordant and discordant pairs of ranked observations

BLogit link (log (p/1-p))

CRank-ordered values of the variables

DWeighted sum of chi-square statistics for 2x2 tables

Answer : C

Question 6

Given the following SAS data set TEST:

Which SAS program is NOT a correct way to create dummy variables?

AOption A

BOption B

COption C

DOption D

Answer : D

Question 7

Refer to the REG procedure output:

An analyst has selected this model as a champion because it shows better model fit than a competing model with more predictors.

Which statistic justifies this rationale?

AR-Square

BCoeff Var

CAdj R-Sq

DError DF

Answer : C

SAS Statistical Business Analysis SAS9: Regression and Model A00-240 Exam Practice Test