gs gs119 Data Preprocessing - Data Reduction - Quiz No.1
gs gs119 Data Science Quiz
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Question 1: Which of the following is not true about attribute subset selection?
Minimum set of attributes is selected
The probability distribution of the created set is close to the original distribution using all the attributes
The probability distribution of the created set is completely different from the original distribution using all the attributes
It makes the study of patterns easier
Question 5: Log linear models are used for _____
Lossless data multiplication
Lossy data redundancy
Parametric data reduction
Non-parametric data reduction
Question 6: Given the regression equation y = wx + b, which of the following statements is false?
y is called predictor variable
x can be a numeric attribute
w and b are regression coefficients
Variance of y is assumed to be constant
Question 7: In equal depth histogram, which of the following is kept constant?
Frequency of the bucket
Width of the bucket
Mean of the bucket
Standard deviation of the bucket
Question 9: The maximum distance between any two objects in a cluster is known as _____
Diameter of the cluster
Radius of the cluster
Circumference of the cluster
Area of the cluster
Question 10: The average distance of each cluster point from the cluster Centroid is called _____
Radius of the cluster
Centroid distance
Median distance
Mean square distance
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