Description

QUESTION: Using the following categories and the “Decision Tree Data” table in the Exercises section of Chapter Six/eight, discretize salary and age variables and solve problems 5 Chapter Six/eight (Decision Tree Chapter). Show only the first split.

Salary Categories
Less than $35000 = Level 1 $35000 to less than $45000 = Level 2
$45000 to less than $55000 = Level 3
Above $55000 = Level 4

Age Categories
Less than or equal to 30 = Category 1
Greater than 30 but less than or equal to 40 = Category 2
Above 40 = Category 3

REFERENCE
TABLE E6.4 Decision Tree Data

Occupation

Service Gender

Female Age
45 Salary $48,000
Male 25 $25,000
Male 33 $35,000

Management
Male 25 $45,000
Female 35 $65,000
Male 26 $45,000
Female 45 $70,000

Sales
Female 40 $50,000
Male 30 $40,000

Staff
Female 50 $40,000
Male 25 $25,000

Construct a classification and regression tree to classify salary based on the other variables. Do as much as you can by hand, before turning to the software.