Bayes Theorem, Naive Bayes Algorithm, KNN Algorithm MCQs

1.     Formula for Bayes theorem is _______

Ans: A

2.     The bayesian network can be used to answer any query by using:-
(A) Full distribution
(B) Joint distribution
(C) Partial distribution
(D) All of the above

Ans: B

3.      Which of the following is correct about the Naive Bayes?
(A) Assumes that all the features in a dataset are independent
(B) Assumes that all the features in a dataset are equally important
(C) Both
(D) None of the above

Ans: C

4.      Naïve Bayes Algorithm is a ________ learning algorithm.
(A) Supervised
(B) Reinforcement
(C) Unsupervised
(D) None of these

Ans: A

 

5.     Examples of Naïve Bayes Algorithm is/are
(A) Spam filtration
(B) Sentimental analysis
(C) Classifying articles
(D) All of the above

Ans: D

6.      Naïve Bayes algorithm is based on _______ and used for solving classification problems.
(A) Bayes Theorem
(B) Candidate elimination algorithm
(C) EM algorithm
(D) None of the above

Ans: A

7.     Disadvantages of Naïve Bayes Classifier:

(A) Naive Bayes assumes that all features are independent or unrelated, so it cannot learn the relationship between features.

(B) It performs well in Multi-class predictions as compared to the other Algorithms. 

(C) Naïve Bayes is one of the fast and easy ML algorithms to predict a class of datasets. 

(D) It is the most popular choice for text classification problems.

Ans: A

8.     The benefit of Naïve Bayes:-

(A) Naïve Bayes is one of the fast and easy ML algorithms to predict a class of datasets.

(B)  It is the most popular choice for text classification problems.

(C)  It can be used for Binary as well as Multi-class Classifications.

(D) All of the above

Ans: D

9. Identify the distance matrix used in KNN Algorithm___________

A.    Euclidean Distance.

B.    Cosine Similarity.

C.    Manhattan Distance.

D.    All.

Ans: D

10. ______in KNN is a parameter that refers to the number of nearest neighbors to include in the majority of the voting process.

A.    K.

B.    First N.

C.    Second N.

D.    All of the above.

Ans: A