Q141: Computational complexity of Gradient descent is
(A) linear in D
(B) linear in N
(C) polynomial in D
(D) dependent on the number of iterations
Q142: The adjusted multiple coefficient of determination accounts for
(A) the number of dependent variables in the model
(B) the number of independent variables in the model
(C) unusually large predictors
(D) none of the above
Q143: Which of the following statements regarding the Gradient of a Continuous and Differentiable Function is false?
(A) is zero at a minimum
(B) is non-zero at a maximum
(C) is zero at a saddle point
(D) decreases as you get closer to the minimum
Q144: Which of the following is an example of a deterministic algorithm?
(A) PCA
(B) K-Means
(C) KNN
(D) None of the above
Q145: Batch Normalization is helpful because
(A) It normalizes (changes) all the input before sending it to the next layer
(B) It returns back the normalized mean and standard deviation of weights
(C) It is a very efficient backpropagation technique
(D) None of these
Q146: Which of the following are true about generative models?
(A) They model the joint distribution P(class = C AND sample = x)
(B) The perceptron is a generative model
(C) They can be used for classification
(D) Linear discriminant analysis is a generative model
Q147: Let A and B be events on the same sample space, with P (A) = 0.6 and P (B) = 0.7. Can these two events be disjoint?
(A) Yes
(B) No
Q148: After performing the Z-test, what can we conclude ____?
(A) Listening to music does not improve memory.
(B) Listening to music significantly improves memory at p
(C) The information is insufficient for any conclusion.
(D) None of the above
Q149: Assume you’re in the final round of the game show “Let’s Make a Deal,” and you have to pick between three doors – 1, 2, and 3. One of the three doors has a vehicle behind it, while the other two contain goats. Assume you select Door 1 and the host opens Door 3 to reveal a goat. Which of the following choices would you select to increase your chances of winning?
(A) Switch your choice
(B) Retain your choice
(C) It doesn’t matter probability of winning or losing is the same with or without revealing one door.
Q150: Assume you’re participating in a game in which we throw a fair coin several times. You’ve already lost three times when you guessed heads but got tails. Which of the following statements is correct in this situation?
(A) You should guess heads again since the tails has already occurred thrice and its more likely for heads to occur now
(B) You should say tails because guessing heads is not making you win
(C) You have the same probability of winning in guessing either, hence whatever you guess there is just a 50-50 chance of winning or losing
