Training Instances Income Student Credit Rating Buy Computer Testing Instances Income Student Credit Rating Buy Computer Instance.1 High True Fair Yes Instance 2 Low False Excellent No Instance 31 Instance.32 Low False Excellent ? High False Fair ? Instance 3 Low True Fair No Instance.4 High False Fair No Instance.5 Low True Excellent Yes Instance.6 High False Fair Yes Instance.7 High True Excellent Yes Instance.8 Low True Fair No Instance 9 Low False Excellent Yes Instance.10 Low True Excellent No Income Student Instance.11 High True Fair No Instance.12 Low False Fair Yes Instance.13 Low True Fair Instance.14 High False Excellent No Instance.15 Low True Fair Yes Instance.16 High False Excellent Yes Instance.17 High True Excellent No Instance.18 Low True Fair No 3 3 5 5 3 3 No Instance.19 Low False Excellent Yes Credit Buy Instance.20 Low True Excellent No Rating Computer Instance.21 High False Excellent Yes Instance.21 Low True Excellent Yes Instance.23 High False Excellent No Instance.24 High True Fair No Instance.25 Low False Fair Yes Instance.26 Low True Fair No Instance.27 Low True Fair Yes Instance.28 Low True Fair Yes Instance.29 Low False Fair No Instance 30 High True Excellent No