Data Handling and Presentation | IT

Question 11

Use the bar graph to answer the following questions:

  1. Is the cost of electricity about one-half the cost of education?
Question diagram 1
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Solution

We will read the values from the bar graph and then compare them.

Step 1 — Find Electricity Cost

Let us look at the bar graph. We find the bar for Electricity. Its height shows the expenditure. The bar for Electricity reaches the 400 mark.

Cost of Electricity=400\text{Cost of Electricity} = \text{₹}400

Electricity cost=400\boxed{\text{Electricity cost} = \text{₹}400}

Diagram 1

Step 2 — Find Education Cost

Now we look for the bar for Education. Its height shows the expenditure. The bar for Education reaches the 800 mark.

Cost of Education=800\text{Cost of Education} = \text{₹}800

Education cost=800\boxed{\text{Education cost} = \text{₹}800}

Diagram 2

Step 3 — Compare the Costs

We need to check if electricity cost is half of education cost. Let us divide the education cost by 2.

Half of Education cost=800÷2\text{Half of Education cost} = \text{₹}800 \div 2

=400= \text{₹}400

The cost of electricity is ₹400. This is the same as half of the education cost. So, the cost of electricity is about one-half the cost of education.

Answer

Yes.

More questions in IT

Q1

To figure out the most popular game in their class, what should Navya and Naresh do? Can you help them?

Q2

Based on the pictograph of 'Modes of Travelling', answer the following questions:

  • Which mode of travel is used by the most number of students?
  • Which mode of travel is used by the least number of students?
Q3

Jarina and Sangita collected data on how many students were present in each class (shown in the table on the previous page).

Q. If they want to show their data through a pictograph, where they also use one symbol ☺ for each student, as Lakhanpal did, what are the challenges they might face?

Q4

What could be the problems faced in preparing such a pictograph, if the total number of students present in a class is 33 or 27?

Q5

Answer the following questions using the bar graph:

  1. In Class 2, _________ students were absent that day.
Q6

Answer the following questions using the bar graph:

  1. In which class were the maximum number of students absent?
Q7

Answer the following questions using the bar graph:

  1. Which class had full attendance that day? _________
Q8

On the basis of this bar graph, what may be a few questions you may ask your friends?

Q9

How much did the population of India increase over 50 years?

How much did the population increase in each decade?

Q10

Use the bar graph to answer the following questions:

  1. On which item does Imran’s family spend the most and the second most?
Q11

Use the bar graph to answer the following questions:

  1. Is the cost of electricity about one-half the cost of education?
Q12

Use the bar graph to answer the following questions:

  1. Is the cost of education less than one-fourth the cost of food?
Q13
  1. The following pictograph shows the number of tractors in five different villages.

Observe the pictograph and answer the following questions—

a. Which village has the smallest number of tractors?

b. Which village has the most tractors?

c. How many more tractors does Village C have than Village B?

d. Komal says, "Village D has half the number of tractors as Village E." Is she right?

Q14
  1. The number of girl students in each class of a school is depicted by the pictograph:

Observe this pictograph and answer the following questions:

a. Which class has the least number of girl students?

b. What is the difference between the number of girls in Classes 5 and 6?

c. If two more girls were admitted in Class 2, how would the graph change?

d. How many girls are there in Class 7?

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