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). What main features do you observe from this tabular representation?
Since the given data is very large, we construct a grouped frequency distribution table of class size 5, class interval will be 0-5, 5-10, 10-15, 15-20 and so on.
The data is represented in the grouped frequency distribution table as:
In the given table the classes do not overlap. Also we find that, the houses of 36 out of 40 engineers are below 20 km of distance.