Find the mode of the following distribution.
(i)
Class-interval: |
0β10 |
10β20 |
20β30 |
30β40 |
40β50 |
50β60 |
60β70 |
70β80 |
Frequency: |
5 |
8 |
7 |
12 |
28 |
20 |
10 |
10 |
(ii)
Class-interval: |
10β15 |
15β20 |
20β25 |
25β30 |
30β35 |
35β40 |
Frequency: |
30 |
45 |
75 |
35 |
25 |
15 |
(iii)
Class-interval: |
25β30 |
30β35 |
35β40 |
40β45 |
45β50 |
50β55 |
Frequency: |
25 |
34 |
50 |
42 |
38 |
14 |
(iv)
Class: |
0β10 |
10β20 |
20β30 |
30β40 |
40β50 |
50β60 |
60β70 |
Frequency: |
8 |
10 |
10 |
16 |
12 |
6 |
7 |