age income student credit rating buys computer <=30 high no fair no =30 high no excellent no 31...40 high nO air ves >40 medium no ar yes >40 lo y es fair ves >40 low yes excellent 10 31.40low yes excellent yes <=30 medium no fa Ir no <=30 low yes fa r yes >40 medium yes fair yes 30 medium yes excellent yes 31...40 medium no excellent yes 31. high yes air yes >40 medium no excellent noage 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