In the given table frequency distribution of marks in mathematics of 100 students are given. Express the values of frequency as percentage of total frequency [Relative frequency] Which class has the maximum and minimum concentration of data?
Marks |
Frequency |
0- 10 |
1 |
10-20 |
8 |
20-30 |
6 |
30-40 |
7 |
40-50 |
21 |
50-60 |
23 |
60-70 |
19 |
70-80 |
6 |
80-90 |
5 |
90 – 100 |
4 |
Total |
100 |