ALT+=
选择单元格区域,CTRL+H,查找内容,输入 SUM,替换为 输入 AVERAGE,全部替换。
C1输入数组公式
=IF(COUNTIF(A$1:A1,A1)=1,AVEDEV(IF(A$1:A$20=A1,B$1:B$20)),"")
以同按CTRL+SHIFT+回车 这三个键
再下拉即可
=SUMIF(A1:A100,"<=50")/COUNTIF(A1:A100,"<=50")
=SUMIF(A1:A100,">50")/COUNTIF(A1:A100,">50")
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