Organisation of Data — Economics STD 11 Commerce — Question

An open-ended frequency distribution is one in which either the upper class limit or the lower class limit of some of the groups is not specified. An example of open-ended frequency distribution is given below Marks.

Marks	Number of Student
Less than 10	4
10-20	2
20-30	8
30-40	10
More than 40	5

In the above example, groups 'less than 10' and more than 40' are open-ended classes.