NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 3: Data Handling - Problems and SolutionsQuestion 72
Class 7 - Mathematics - Unit 3: Data Handling - Problems and Solutions
Question. 72
Observe the given bar graph carefully and answer the questions that follow.
(a) What information does the bar graph depict?
(b) How many motor bikes were produced in the first three months?
(c) Calculate the increase in production in May over the production in January.
(d) In which month the production was minimum and what was it?
(e) Calculate the average (mean) production of bikes in 6 months.
Answer:
(a) Production of motor bikes by XYZ Automobiles Ltd. during January to June.
(b) 2100
(c) 300
(d) June, 500
(e) 767 bikes (nearest whole number)
Detailed Answer with Explanation:
(a) The graph shows monthly production.
(b) Jan + Feb + Mar = 600+800+700 = 2100.
(c) May − Jan = 900 − 600 = 300.
(d) Lowest bar = June, 500.
(e) Total = 4600, mean = 4600/6 = 766.67 ≈ 767.