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Answer :
Let us make the classes as 0-5, 5-10, 10-15, 15-20, 20-25, 25-30 and 30-35.
The frequency distribution table will be as follows:
Distance from residence | Distance values and No. of entries (Tally Marks) | No. of engineers(frequency) |
0 - 5 | 3, 2, 3, 3, 2 = 5 entries | 5 |
5 - 10 | 5, 7, 7, 9, 7, 8, 5, 9, 6, 7, 6 = 11 entries | 11 |
10 - 15 | 10, 11, 13, 12, 10, 12, 11, 12, 12, 14, 12 = 11 entries | 11 |
15 - 20 | 19, 17, 18, 17, 16, 15, 18, 15, 15 = 9 entries | 9 |
20 - 25 | 20 = 1 entry | 1 |
25 - 30 | 25 = 1 entry | 1 |
30 - 35 | 31, 32 = 2 entries | 2 |