Chapter 6 – Bar Graphs
Practice set 18
1. This bar graph shows the maximum temperatures in degrees Celsius in different cities on a certain day in February. Observe the graph and answer the questions.
(1) What data is shown on the vertical and the horizontal lines?
Ans:
Vertical line shown → Temperatures of different cities are shown
Horizontal line → Name of cities are shown
(2) Which city had the highest temperature?
Ans: Chandrapur city had the highest temperature.
(3) Which cities had equal maximum temperatures?
Ans: Pune and Nashik had equal maximum temperatures.
(4) Which cities had a maximum temperature of 30°C?
Ans: Panchgani and Matheran had a maximum temperature of 25°C,
(5) What is the difference between the maximum temperatures of Panchgani And Chandrapur?
Ans: The difference between the maximum temperatures of Panchgani and Chandrapur is 10°C.
Practice set 19
(1) The names of the heads of some families in a village and the quantity of drinking water their family consumes in one day are given below. Draw a bar graph for this data.
(Scale : On Y‑axis, 1cm = 10 litres of water)
Solution:
(2) The names and numbers of animals in a certain zoo are given below. Use the data to make a bar graph.
(Scale : on Y‑axis, 1cm = 4 animals)
Solution:
(3) The table below gives the number of children who took part in the various items of the talent show as part of the annual school gathering. Make a bar graph to show this data.
(Scale : on Y‑axis, 1cm = 4 children)
Solution:
(4) The number of customers who came to a juice centre during one week is given in the table below. Make two different bar graphs to show this data.
(Scale : on Y‑axis, 1cm = 10 customers, on Y-axis, 1cm = 5 customers)
Solution:
(a) On Y‑axis, 1cm = 10 customers
(b) On Y-axis, 1cm = 5 customers
(5) Students planted trees in 5 villages of Sangli district. Make a bar graph of this data.
(Scale : on Y‑axis, 1cm = 100 trees)
Solution:
(6) Yashwant gives different amounts of time as shown below, to different exercises he does during the week. Draw a bar graph to show the details of his schedule using an appropriate scale.
Solution:
1 hour = 60 minutes
∴ 1 hour 10 minutes
= 1 hour + 10 minutes
= 60 minutes + 10 minutes
= 70 minutes
And,
1½ hours
= 1 hour + ½ hour
= 60 minutes + 30 minutes
= 90 minutes
(7) Write the names of four of your classmates. Beside each name, write his/her weight in kilograms. Enter this data in a table like the above and make a bar graph.
Solution:
Students should do this on their own.