The following are the marks (out of $100$) of $60$ students in mathematics:
$16, 13, 5, 80, 86, 7, 51, 48, 24, 56, 70, 19, 61, 17, 16, 36, 34, 42, 34, 35, 72, 55, 75, 31, 52, 28, 72, 97, 74, 45, 62, 68, 86, 35, 85, 36, 81, 75, 55, 26, 95, 31, 7, 78, 92, 62, 52, 56, 15, 63, 25, 36, 54, 44, 47, 27, 72, 17, 4, 30$
Construct a grouped frequency distribution table with a class width of $10$,such that one of the classes is $10-20$ ($20$ not included).
$16, 13, 5, 80, 86, 7, 51, 48, 24, 56, 70, 19, 61, 17, 16, 36, 34, 42, 34, 35, 72, 55, 75, 31, 52, 28, 72, 97, 74, 45, 62, 68, 86, 35, 85, 36, 81, 75, 55, 26, 95, 31, 7, 78, 92, 62, 52, 56, 15, 63, 25, 36, 54, 44, 47, 27, 72, 17, 4, 30$
Construct a grouped frequency distribution table with a class width of $10$,such that one of the classes is $10-20$ ($20$ not included).
(N/A) To construct the grouped frequency distribution table,we count the number of students falling into each class interval of width $10$. The data is distributed as follows:
| Class Intervals | Frequency |
| $0-10$ | $4$ |
| $10-20$ | $7$ |
| $20-30$ | $5$ |
| $30-40$ | $6$ |
| $40-50$ | $5$ |
| $50-60$ | $8$ |
| $60-70$ | $5$ |
| $70-80$ | $8$ |
| $80-90$ | $5$ |
| $90-100$ | $7$ |
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