if函数可嵌套7层函数，格式为=if(条件，条件成立结果，条件不成立结果)。 你可将the Time、mean、sd输入单元格中，如： A1=the Time A2=mean A3=sd 结果输出到a5 =IF(A1>A2+A3*2,"the Class is Olympian",IF(A1>A2+A3,"the Class is Elite",IF((A1>A2,"the Class is Professional",IF(A1>A2-A3,"the Class is Amateur","the Class is Fun Runner"))))。
