(a) What is the GINI index of the dataset? (b) What is the GINI index of the split on
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.1: Stem-and-leaf Plots And Histograms
Problem 9E
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Question
(a) What is the GINI index of the dataset?
(b) What is the GINI index of the split on A1 and that on A2 respectively?
![Problem 1. Consider a dataset with three columns of binary attributes A1, Az and a binary label
attribute Y. There are eight types of data point in total, and their corresponding proportions in
the dataset are captured in the column P.
type A1 A2
Y P
1
8%
1
1 29%
3
1
1
2%
4
1
1 18%
16%
1
2%
1
1%
1
1
1
24%
2.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F11dbc24e-283a-436e-afcc-c1a5b961194d%2Ff68d3864-46a7-475c-9875-a81efeabbe9e%2Fm91uoth_processed.png&w=3840&q=75)
Transcribed Image Text:Problem 1. Consider a dataset with three columns of binary attributes A1, Az and a binary label
attribute Y. There are eight types of data point in total, and their corresponding proportions in
the dataset are captured in the column P.
type A1 A2
Y P
1
8%
1
1 29%
3
1
1
2%
4
1
1 18%
16%
1
2%
1
1%
1
1
1
24%
2.
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