[MATLAB基础] 如何做频数分布表

[牙鸟日尧]

vdata=[18,20,16,6,16,17,12,14,16,18,14,14,16,9,20,18,12,15,13,16,16,21,21,9,16,20,14,14,16,16];
将数据分组，是组中值分别为6，9，12，15，18，21，作出x的频数分布表，作出频率分布直方图

[slgu]

x=[18,20,16,6,16,17,12,14,16,18,14,14,16,9,20,18,12,15,13,16,16,21,17]
x =
Columns 1 through 12
18 20 16 6 16 17 12 14 16 18 14 14
Columns 13 through 23
16 9 20 18 12 15 13 16 16 21 17
>> hh=[6 9 12 15 18 21]
hh =
6 9 12 15 18 21
>> h=hist(x,hh)
h =
1 1 3 10 5 3
>> bar(hh,h)
>>