Page 153 - Maths Skill - 6

Data Handling and Presentation 151

Example 5: Read the bar graph shown in Fig. and answer the following questions.

(i) What is the information given by the
bar graph? Scale:
Y-axis: 10 divisions = 100 students
(ii) What are the different numbers of the
shoes worn by the students?
(iii) What is the number of students
wearing shoe no. 6?
(iv) Which shoe number is worn by the
maximum number of students? Also
give its number.
(v) Which shoe no. is worn by the
minimum number of students? Also
give its number.
(vi) State whether true or false: The
number of students wearing shoe no.
10 is less than three times the number
of students wearing shoe no. 9. (Representation of shoe numbers of 3000 students)

Solution: Total number of students = 500 + 350 + 400 + 750 + 500 +100 + 400 = 3000
(i) The given bar graph represents the number of students wearing shoes of different numbers out
of a total of 3000 selected students.
(ii) The students wear shoes bearing numbers 4, 5, 6, 7, 8, 9 and 10.
(iii) The number of students wearing shoe no. 6 is 400.
(iv) Shoe number 7 is worn by the maximum number of students. These students are 750 in number.
(v) Shoe number 9 is worn by the minimum number of students. The number of such students is 100.
(vi) The number of students wearing shoe number 10 is 400 and the number of students wearing
shoe number 9 is 100.
Clearly, three times the number of students wearing shoe number 9 is less than the number of
students wearing shoe number 10. So, the given statement is not true.

Example 6: Read the following bar graph given
in Fig. and answer the following Scale:
questions. Y-axis: 10 divisions = 10 million tonnes
(i) What information is given by 2019-20
this bar graph? 2019-20
(ii) Which two states have same 2018-19 2018-19
production in 2018–19? 2019-20
(iii) Name the state having same 2019-20 2018-19
production in both the years? 2018-19

(iv) Which state has minimum 2018-19 2019-20
production?

Bar graph representing coal production of five states during 2018–20