age,income,student,credit_rating,buys_computer
<=30,high,no,fair,no
<=30,high,no,excellent,no
31…40,high,no,fair,yes
>40,medium,no,fair,yes
>40,low,yes,fair,yes
>40,low,yes,excellent,no
31…40,low,yes,excellent,yes
<=30,medium,no,fair,no
<=30,low,yes,fair,yes
>40,medium,yes,fair,yes
<=30,medium,yes,excellent,yes
31…40,medium,no,excellent,yes
31…40,high,yes,fair,yes
>40,medium,no,excellent,no
<=30,medium,yes,fair,no