Exhibit 10.1
The following questions are based on the problem description and the output below.
A college admissions officer wants to evaluate graduate school applicants based on their GMAT scores, verbal and quantitative. Students are classified as either successful or not-successful in their graduate studies. The officer has data on 20 current students, ten of whom are doing very well (Group 1) and ten who are not (Group 2).
-Refer to Exhibit 10.1. How many observations are classified correctly?
A) 11
B) 9
C) 17
D) 20

Question

Exhibit 10.1
The following questions are based on the problem description and the output below.
A college admissions officer wants to evaluate graduate school applicants based on their GMAT scores, verbal and quantitative. Students are classified as either successful or not-successful in their graduate studies. The officer has data on 20 current students, ten of whom are doing very well (Group 1) and ten who are not (Group 2).  ​  ​  ​  ​ 
-Refer to Exhibit 10.1. How many observations are classified correctly?
A) 11 
B) 9 
C) 17 
D) 20

Quizplus · Accepted Answer

To determine the number of observations classified correctly, we need to add the diagonal elements of the confusion matrix provided in Exhibit 10.1. Assuming a standard confusion matrix layout, the correctly classified observations are those where the predicted class matches the actual class, which are typically located on the matrix's diagonal. Without the actual matrix provided, this explanation applies generally: you sum the counts on the diagonal to find the total number of correct classifications. Given the options, if the correct answer is stated as 17, it means that the sum of the diagonal elements equals 17.

Exhibit 10.1 the Following Questions Are Based on the Problem Description and Description