A:0
B:3000N
C:1.2×104N
D:1.5×104N
美洲主要位于( )
①____ What's your friend's name? A.Yes, she is.
②____ Does she have long hair? B.Yes, they are.
③____ Are they good friends? C.He's short.
④____ Is your brother tall or short? D.Yes, she does.
⑤____ Is she thin? E.Liu Tong.
如图是某电视台综艺节目举办的挑战主持人大赛上,七位评委为某选手打出的分数的茎叶统计图,去掉一个最高分和一个最低分后,所剩数据的平均数和方差分别为( )