(1) Calculate the information gain for Outlook. (2) Build Decision Tree and forecast results of Today and Tomorrow.

Temperature Windy false true false false true false false false true true false true true false Play Golf? no OutlookHumidity 07-05 07-06 07-07 07-09 07-10 07-12 07-14 07-15 07-20 07-21 07-22 07-23 07-26 07-30 sunny sunny overcast rain overcast sunny sunny rain sunny overcast overcast rain rain rain yes yes yes cool normal cool normal cool normal normal normal yes yes yes yes yes no no mild normal cool normal today cool sunny normal false tomorrow mild sunny normal false