In a survey of `85` families of a colony, the number of members each family was recorded and the data has been represented by the following bar graph:

Read the bar graph carefully and answer the following questions:
(i) What information does the bar graph give?
(ii) How many families have 3 members?
(iii) How many people live alone?
(iv) Which type of family is the most common? How many members are there in each family of this kind?

Explanation

(i) The bar graph shows the number of members in each of the 85 families of a colony.
(ii) Clearly, 40 families have 3 members each.
(iii) Clearly, 5 couples, i.e., 10 people live alone.
(iv) Most common is the family having 3 members.