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21
Let's say, a "Linear regression" model perfectly fits the training data (train error is zero). Now, Which of the following statement is true?
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Answer & Solution
Answer: Option C
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22
SVM is a learning
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Answer & Solution
Answer: Option A
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23
Which of the following quantities are minimized directly or indirectly during parameter estimation in Gaussian distribution Model?
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Answer & Solution
Answer: Option A
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24
What does K refers in the K-Means algorithm which is a non-hierarchical clustering approach?
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Answer & Solution
Answer: Option D
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25
If {A,B,C,D} is a frequent itemset, candidate rules which is not possible is
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Answer & Solution
Answer: Option B
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26
Below are the two ensemble models: 1. E1(M1, M2, M3) and 2. E2(M4, M5, M6) Above, Mx is the individual base models. Which of the following are more likely to choose if following conditions for E1 and E2 are given? E1: Individual Models accuracies are high but models are of the same type or in another term less diverse E2: Individual Models accuracies are high but they are of different types in another term high diverse in nature
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Answer & Solution
Answer: Option B
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27
Naive Bayes classifiers are a collection . . . . . . . . of algorithms
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Answer & Solution
Answer: Option A
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28
The K-means algorithm:
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Answer & Solution
Answer: Option C
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29
What is true about an ensembled classifier?
1. Classifiers that are more "sure" can vote with more conviction
2. Classifiers can be more "sure" about a particular part of the space
3. Most of the times, it performs better than a single classifier
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Answer & Solution
Answer: Option D
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30
100 people are at party. Given data gives information about how many wear pink or not, and if a man or not. Imagine a pink wearing guest leaves, what is the probability of being a man Given Data:

Man Not a Man Total
Wearing Pink 20 30 50
Not Wearing Pink 30 20 50
Total 50 50 100
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Answer & Solution
Answer: Option A
Solution:
Given Data:

The question asks for the probability that a pink-wearing guest is a man. Therefore, we consider only the guests who are wearing pink.

There are 50 pink-wearing guests, out of whom 20 are men.

Conditional Probability:

P(Man | Pink) = Number of Pink-wearing Men / Total Number of Pink-wearing Guests

= 20 / 50

= 0.4

Therefore, the probability that a pink-wearing guest is a man is 0.4.

Hence, the correct answer is Option A: 0.4.