Practice Frequency Polygon (3.3) - Chapter 4 : Statistics - CBSE Class 9 Maths
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Frequency Polygon

Practice - Frequency Polygon

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Practice Questions

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Question 1 Easy

Calculate the class mark for the interval 40-50.

💡 Hint: Add the lower and upper limits and divide by 2.

Question 2 Easy

What is the frequency of the interval 30-40 if you have a frequency table?

💡 Hint: Check the table for the frequency corresponding to the 30-40 interval.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is a frequency polygon used for?

To calculate mean
To represent frequency distribution
To perform algebra

💡 Hint: Think about the main purpose of graphical representations in statistics.

Question 2

True or False: A frequency polygon can be created without using a histogram.

True
False

💡 Hint: Recall the steps to create a frequency polygon.

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Challenge Problems

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Challenge 1 Hard

A company has employee categories and their respective employees as follows: Sales (10), HR (15), IT (5), Operations (20). Create a frequency polygon and analyze what this might suggest about staffing.

💡 Hint: Ensure you represent each category clearly on your graph.

Challenge 2 Hard

Construct a frequency polygon and interpret it based on the following data: 5 students scored between 0-10, 15 students between 10-20, and 10 students between 20-30. What does the resulting polygon tell us?

💡 Hint: Look for the most elevated section in your polygon.

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