In the confusion matrix below, the sensitivity is Actual class yes no Total Yes 100 200 300 no 50 200 250 Total 150 400 A 0.67 B 0.55 0.33 D 1.0 Predict

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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no need explanation just answer is okay, but if I got wrong answers, I willl downvote for it

Question 18
In the confusion matrix below, the sensitivity is
Actual class
Total
...
yes
no
Yes
100
200
300
no
50
200
250
Total
150
400
A) 0.67
В
0.55
0.33
1.0
Predict
Transcribed Image Text:Question 18 In the confusion matrix below, the sensitivity is Actual class Total ... yes no Yes 100 200 300 no 50 200 250 Total 150 400 A) 0.67 В 0.55 0.33 1.0 Predict
Question 19
A national university was instructed to adopt a liberal attitude to admit students so that more students have a chance of university
education. This resulted in some students not making the grade during subsequent university examinations. By considering positive
to mean a student of adequate academic ability, this creates a problem of:
A
True Positive
В
True Negative
False Positive
D) False Negative
Question 20
After training a decision tree, you decide to prune the tree. If the tree is pruned too much, it can result in
but if it is pruned
too little, it can result in
A Over-fitting & under-fitting
B Under-fitting & over-fitting
Over-fitting & over-fitting
D Under-fitting and under-fitting
Transcribed Image Text:Question 19 A national university was instructed to adopt a liberal attitude to admit students so that more students have a chance of university education. This resulted in some students not making the grade during subsequent university examinations. By considering positive to mean a student of adequate academic ability, this creates a problem of: A True Positive В True Negative False Positive D) False Negative Question 20 After training a decision tree, you decide to prune the tree. If the tree is pruned too much, it can result in but if it is pruned too little, it can result in A Over-fitting & under-fitting B Under-fitting & over-fitting Over-fitting & over-fitting D Under-fitting and under-fitting
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