The distance (in km) of 40 engineers from their residence to their place
of work were found as follows:
5 3 10 20 25
11 13 7 12 31
19 10 12 17 18
11 32 17 16 2
7 9 7 8 3 5
12 15 18 3
12 14 2 9 6 15
15 7 6 12
Construct a grouped
frequency distribution table with class size 5 for the data given above taking
the first interval as 0-5 (5 not included).
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2
Answer:
Distance (in km.) No. of engineers
Less than 7 km. 9
More than 7 km. 31
Total 40
Total number of engineers =40
(i) Number of engineers living less than 7km from their place of work =9
P=
40
9
(ii) Number of engineers living more than or equal to 7km from their place of work =40−9=31
P=
40
31
(iii) Number of engineers living within
2
1
km from her place of work =0
P=
40
0
=0
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