. . , . :
/ | - | |
< 15 . . | ||
15 - 20 . . | ||
20 - 30 . . |
, . .
( ): , -; , - ; , . ( ). ( ) ( ). . :
- -
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:
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i=(Xmax Xmin)/n
n=1+3,322lgN
, :
1. ,
2. ,
(): 8, 2, 6; 1, 4, 2, 10, 5, 4, 3, 6
i = (10-1)/3=3 ; 1+3=4
() | , % | ||
1-4 | |||
4-7 | |||
7-10 | |||
1-4 | 6,75 | ||
4-7 | 6,8 | ||
7-10 | |||
8,36 |
% | |||
10% | |||
20% | |||
30% | |||
25% | |||
15% | |||
100% |