## 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.*