Problems #1 (20 points)

Using an Addiction dataset, a researcher has prepared the following table of patient counts:

Ethnicity	Age Category	Alcohol	Cocaine	Heroin	Row Total
Black	Old	30	48	17	95
	Young	25	72	13	110
Hispanic	Old	7	0	5	12
	Young	8	7	19	34
White	Old	60	2	17	79
	Young	26	10	34	70
Column Total		156	139	105	400

Use the table above and Excel to classify patient addiction type (Alcohol, Cocaine, Heroin) using Ethnicity and Age Category:

• Construct a C4.5 decision tree (two levels deep only).