### Consider the following source of (attribute-value, class) pairs. S = {(20, C1), (21, C1), (22, C1), (24, C1), (24, C2), (25, C1), (25, C2), (26, C1), (27, C1), (28, C1), (28, C2), (29, C1), (29, C2), (30, C2), (33, C1), (34, C2), (35, C2), (39, C2), (41, C2), (42, C2)} (a) Find the source entropy. (b) Find the optimum threshold to separate the two classes,

Consider the following source of (attribute-value, class) pairs.

S = {(20, C1), (21, C1), (22, C1), (24, C1), (24, C2), (25, C1),

(25, C2), (26, C1), (27, C1), (28, C1), (28, C2), (29, C1), (29,

C2), (30, C2), (33, C1), (34, C2), (35, C2), (39, C2), (41, C2),

(42, C2)}

(a) Find the source entropy. (b) Find the optimum threshold to

separate the two classes,