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)}