2017-2018 24 1 0.5*8=4 J tu h n m n ( ) ( ) ( ) ( ) 2 0.5*8=4 3 2 A B C D 4. 2 A B C D 5 2 6 10 1 2 3 4 5 6 7 8 4 1 2 2 2 8 1 2 2 2 _ 3 2 4 2 33 4 1 2 2 2 10 14 12 ( ) (l i xi ) y u 122 1 4 1 2 3 4 2 4 1 2 3 2 4 (2 ) “ “ “ “ “ “ “ “ 1 2 2 2 3 3 4 2 8 0.01 / 2 1 / 2 10 / 2 100 / 2 1. 2 2. 2 3. 2 4. 2 (50 ) 29. (50 ) (1) _ 600 (2) 600