Question

Explain with example Grouped frequency distribution table.

Answer 1

In this method, the numerical data is classified into convenient groups or classes using tally marks.

In the table given below, the data is classified into groups 11 to 20, 21 to 30,….,71 to 80.

Note the following important points of this table:

• The method of preparing this table is easy.
• The numerical data have got a concise form.
• The individual nature of the data has disappeared. The table represents the nature of group.
• With the help of this table, it is possible to analyse the data to some extent.