excel函数FREQUENCY、COUNTIFS、COUNTIF
用COUNTIFS函数求60到80分之间的成绩个数=COUNTIFS(B2:B10,">60",B2:B10,"<=80")用COUNTIF函数求60到80分之间的成绩个数=COUNTIF(B2:B10,">60")-COUNTIF(B2:B10,">80")用FREQUENCY函数统计多个区间的数据个数{=FREQUENCY(B2:B10,E2:E5)}...