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.
