22.4,19.9,18.6,23.3,21,15.8,22.5,16.5极差和方差分别是

milangold2022-10-04 11:39:541条回答

22.4,19.9,18.6,23.3,21,15.8,22.5,16.5极差和方差分别是
1.4,0.2,负2,0.1,负0.1,负0.3,负0.5,1.1极差和方差分别是

已提交，审核后显示！提交回复

fjwl 共回答了21个问题 | 采纳率90.5%: 22.4 19.9 18.6 23.3 21 15.8 22.5 16.5极差和方差分别是7.5 7.965714286
1.4 0.2 -2 0.1 -0.1 -0.3 -0.5 1.1极差和方差分别是3.4 1.08125; 1年前