1 |
7 |
1 |
2 |
3 |
2 |
AE |
BE |
DF |
CF |
1 |
AD |
1 |
BC |
1 |
OE |
1 |
AD |
1 |
BC |
1 |
OF |
AD |
EF |
EF |
BC |
k |
x |
FG |
CE |
3 |
4 |
1 |
1×2 |
1-2 |
1+1 |
1 |
2×3 |
4-2 |
4+2 |
1 |
2 |
1 |
3×4 |
9-2 |
9+3 |
1 |
3 |
1 |
4×5 |
16-2 |
16+4 |
1 |
4 |
1 |
5×6 |
25-2 |
25+5 |
1 |
5 |
AB |
OC |
组别 | 1 | 2 | 3 | 4 | 5 |
次数段 | 0≤x<15 | 15≤x<30 | 30≤x<45 | 45≤x<60 | 60≤x<75 |
频数 | 5 | 12 | a | b | 4 |
频率 | 0.1 | 0.24 | m | n | 0.08 |