SAS Statistical Business Analysis SAS9: Regression and Model
Last Update May 21, 2024
Total Questions : 99
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Given the following GLM procedure output:
Which statement is correct at an alpha level of 0.05?
Which SAS program will best identify influential observations in a multiple regression application?
Spearman statistics in the CORR procedure are useful for screening for irrelevant variables by investigating the association between which function of the input variables?
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)
B)
C)
D)
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.
Identify the correct SAS program for fitting a multiple linear regression model with dependent variable (y) and four predictor variables (x1-x4).
When mean imputation is performed on data after the data is partitioned for honest assessment, what is the most appropriate method for handling the mean imputation?
A linear model has the following characteristics:
• A dependent variable (y)
• One continuous variable (x1)
• One categorical (с1 with 3 levels) predictor variable and an interaction term (с1 by x1)
How many parameters, including the intercept, will be estimated for this model?
Enter your numeric answer in the space below.
A linear model has the following characteristics:
Which SAS program fits this model?
Refer to the following odds ratio table:
What is a correct interpretation of the estimate?
Refer to the exhibit.
Which conclusion is justified concerning Sales, comparing stores A, B, and C?
Which SAS program will correctly use backward elimination selection criterion within the REG procedure?
Assume a $10 cost for soliciting a non-responder and a $200 profit for soliciting a responder. The logistic regression model gives a probability score named P_R on a SAS data set called VALID. The VALID data set contains the responder variable Pinch, a 1/0 variable coded as 1 for responder. Customers will be solicited when their probability score is more than 0.05.
Which SAS program computes the profit for each customer in the data set VALID?
Refer to the lift chart:
What does the reference line at lift = 1 corresponds to?