Q.no 51. Which of the following sentence is FALSE regarding regression?
A : It relates inputs to outputs.
B : It is used for prediction.
C : It may be used for interpretation.
D : It discovers causal relationships.
Answer for Question No 51. is d
Q.no 52. The basic idea of the apriori algorithm is to generate the item sets of a particular size & scans the database.These item sets are
A : Primary
B : Secondary
C : Superkey
D : Candidate
Answer for Question No 52. is d
Q.no 53. Which operation data warehouse requires ?
A : Initial loading of data
B : Transaction processing
C : Recovery
D : Concurrency control mechanisms
Answer for Question No 53. is a
Q.no 54. The problem of finding hidden structure from unlabeled data is called as
A : Supervised learning
B : Unsupervised learning
C : Reinforcement Learning
D : Semisupervised learning
Answer for Question No 54. is b
Q.no 55. A model makes predictions and predicts 120 examples as belonging to the minority class, 90 of which are correct, and 30 of which are incorrect. Precision of model is
A : Precision = 0.89
B : Precision = 0.23
C : Precision = 0.45
D : Precision = 0.75
Answer for Question No 55. is d
Q.no 56. Accuracy is
A : Number of correct predictions out of total no. of predictions
B : Number of incorrect predictions out of total no. of predictions
C : Number of predictions out of total no. of predictions
D : Total number of predictions
Answer for Question No 56. is a
Q.no 57. What does a Pearson’s product-moment allow you to identify?
A : Whether there is a relationship between variables
B : Whether there is a significant effect and interaction of independent variables
C : Whether there is a significant difference between variables
D : Whether there is a significant effect and interaction of dependent variables
Answer for Question No 57. is a
Q.no 58. A model makes predictions and predicts 90 of the positive class predictions correctly and 10 incorrectly.Recall of model is
A : Recall=0.9
B : Recall=0.39
C : Recall=0.65
D : Recall=5.0
Answer for Question No 58. is a
Q.no 59. Rotating the axes in a 3-D cube is the examplele of
A : Pivot
B : Roll up
C : Drill down
D : Slice
Answer for Question No 59. is a
Q.no 60. These server performs the faster computation
A : ROLAP
B : MOLAP
C : HOLAP
D : HaoLap
Answer for Question No 60. is b
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