Frequency Polygon – Statistics Chapter 6.5 | Class 10 Algebra | Maharashtra State Board

Welcome to our Class 10 Algebra – Statistics Series based on the Maharashtra State Board syllabus!
In this lesson, we’ll explore one of the most useful tools in graphical statistics — the Frequency Polygon, from Chapter 6.5 of your textbook.

A frequency polygon gives a visual comparison of different data distributions, helping us understand how frequencies change across class intervals.
In this video, you’ll learn how to construct and interpret frequency polygons easily — exactly the way it’s asked in the SSC Board Exam.

🔹 In This Video You Will Learn:

✅ What is a Frequency Polygon
✅ Difference between Histogram and Frequency Polygon
✅ Steps to draw a frequency polygon using histogram data
✅ How to plot points using class marks (mid-points)
✅ How to draw frequency polygons without histogram
✅ Solved examples from Practice Set 6.5
✅ Common mistakes students make and how to avoid them
✅ Board exam-oriented tips & tricks for quick drawing

📘 Important Concepts

Class mark (x): (Upper class limit + Lower class limit) ÷ 2

Frequency: Number of observations in each class

Plot points (class mark, frequency) and join them with straight lines

Always close the polygon on both sides with zero-frequency points

📚 Perfect For

Class 10 Maharashtra Board students

SSC Board Maths exam preparation

Learners revising Statistics Chapter 6

Students who want to understand graphical data representation

Quick revision before exams

🎯 Learning Outcomes

✔ Understand the concept and purpose of frequency polygons
✔ Learn to construct graphs accurately
✔ Solve Practice Set 6.5 examples confidently
✔ Differentiate between Histogram and Frequency Polygon
✔ Master graphical interpretation skills for Statistics

📘 Topics Covered

Definition of Frequency Polygon

Class Marks and Frequency Table

Drawing Frequency Polygon with & without Histogram

Solved Examples – Practice Set 6.5

Common Mistakes & Tips
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