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RD Sharma Solutions Class 9 Maths Chapter 23 -Graphical Representation of Statistical Data
By Swati Singh
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Updated on 11 Jun 2025, 18:04 IST
RD Sharma Class 9 Chapter 23 – Graphical Representation of Statistical Data provides step-by-step solutions to all textbook questions, carefully prepared by expert mathematics teachers at Infinity Learn. You can download the free PDF of these solutions to strengthen your understanding of the chapter and boost your performance in both school exams and competitive tests.
RD Sharma Solution for Class 9 Chapter 23- Download PDF
Here are the RD Sharma Solutions Class 9 Maths Chapter 25 Tabular Representation of Statistical Data Solutions, designed to help students prepare effectively for their exams. By referring to these solutions and practicing the problems, students can boost their confidence and improve their scores
RD Sharma Solution for Class 9 Chapter 23 - Question with Answers
1. What is a bar graph?
Answer: A bar graph uses bars to show data clearly, with each bar representing a different item.
2. Why do we use bar graphs?
Answer: Bar graphs help us compare different values easily by using bars.
3. What is a histogram?
Answer: A histogram is like a bar graph but used to show grouped data or data in ranges.
4. What does a line graph show?
Answer: A line graph shows how data changes over time by connecting points with lines.
5. What is a pie chart?
Answer: A pie chart is a circle divided into parts, where each part shows a portion of the total data.
6. What are the main parts of a bar graph?
Answer: Title, X-axis, Y-axis, bars, and labels.
7. What is the difference between a bar graph and a histogram?
Answer: In a bar graph, bars have space between them. In a histogram, bars are joined together.
8. How do you find the highest value in a bar graph?
Answer: Look for the tallest bar.
9. What does each slice in a pie chart represent?
Answer: Each slice shows the size of one category as part of the total.
10. What is the purpose of a title in a graph?
Answer: The title tells what the graph is about.
11. Can a pie chart be used to show marks of students?
Answer: Yes, it can show each student's marks as a part of the total.
12. What kind of graph is best to show monthly rainfall?
Answer: A line graph or bar graph.
13. How is data arranged in a histogram?
Answer: Data is grouped in intervals like 0–10, 10–20, etc.
14. What should you label in a bar graph?
Answer: You should label the bars, axes, and give a title.
15. What is the x-axis in a graph?
Answer: The horizontal line that shows categories or intervals.
16. What is the y-axis in a graph?
Answer: The vertical line that shows the frequency or value of data.
17. When do we use a line graph?
Answer: When we want to show change over time, like temperature over a week.
18. What type of data can be shown in a pie chart?
Answer: Data that adds up to a whole, like percentages or totals.
19. What are the advantages of using graphs?
Answer: Graphs make data easy to understand, compare, and visualize.
20. Can you use colors in graphs?
Answer: Yes, colors help to separate and identify data more clearly.
21. What is the use of a scale in a graph?
Answer: A scale helps you measure values correctly along the graph axes.
22. Can we use the same scale for all types of graphs?
Answer: No, the scale depends on the type and range of data shown.
23. What kind of graph helps compare more than one item?
Answer: A bar graph is good for comparing many items.
24. What kind of graph shows part-to-whole relationships?
Answer: A pie chart shows how much each part contributes to the total
25. In a histogram, what do the heights of the bars represent?
Answer: The heights show the frequency or how many times a range of values appears.
26. How do you find the most frequent data from a histogram?
Answer: Look at the tallest bar – that range has the most data points.
27. What does the line in a line graph connect?
Answer: It connects points that show values at different times or intervals.
28. What should you do before drawing any graph?
Answer: Organize the data clearly and choose the correct type of graph.
29. What is the difference between grouped and ungrouped data in graphs?
Answer: Grouped data is divided into intervals (e.g., 0–10), ungrouped data lists individual values.
30. What should you write along the x-axis and y-axis?
Answer: On the x-axis, write categories or intervals. On the y-axis, write frequencies or values.
31. Can we use a bar graph to show continuous data?
Answer: No, bar graphs are best for separate categories. For continuous data, use histograms or line graphs.
32. What happens if you don’t use equal width bars in a graph?
Answer: The graph may give wrong or confusing information.
33. What does overlapping bars in a graph mean?
Answer: It may show comparison between two sets of data side by side.
34. Why are graphs useful in statistics?
Answer: They help us see, compare, and explain data in a simple visual way.
35. How can a pie chart be helpful in a survey?
Answer: It shows which option was chosen the most and how responses are divided.
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FAQs on Graphical Representation of Statistical Data
What is a graphical representation of data?
It is a way to show numbers or information using pictures like bar graphs, line graphs, pie charts, or histograms.
Why do we use graphs in statistics?
Graphs help us understand data quickly and easily. They show patterns, comparisons, and trends at a glance.
What is a bar graph?
A bar graph shows data using rectangular bars. The length of each bar tells the value or number.
What is a histogram? How is it different from a bar graph?
A histogram is used to show grouped data. Its bars touch each other, unlike bar graphs where bars have gaps.
When do we use a pie chart?
Pie charts are used to show how much each part contributes to the whole, like in surveys or percentage data.
What does a line graph show?
A line graph shows how values change over time, like temperature or marks across months.
What should every graph include?
Every graph should have a title, labeled axes, scale, and proper markings for values or categories.
What is the importance of the scale in a graph?
The scale helps to measure values correctly. Without it, the graph can be misleading.
Are graphs used only in maths?
No, graphs are used in science, geography, economics, and real-life surveys to present data visually.