求英语数学好的在线做题丫亲,classes,frequencies40 - 44,1145 - 49,950 - 54,1255 - 59,560 - 64 ,3for this group of data find median?(classes and frequencies are separated by (,))
2019-03-30
求英语数学好的在线做题丫亲,
classes,frequencies
40 - 44,11
45 - 49,9
50 - 54,12
55 - 59,5
60 - 64 ,3
for this group of data find median?(classes and frequencies are separated by (,))
优质解答
（11+9+12+5+3）/2=20
所以中位数为（49+50）/2=49.5
（11+9+12+5+3）/2=20
所以中位数为（49+50）/2=49.5