Practice Example 1 - 13.4.2 | 13. Statistics | CBSE 10 Mathematics
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13.4.2 - Example 1

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the formula for finding the median of grouped data?

💡 Hint: Think of the variables: l for lower limit, cf for cumulative frequency.

Question 2

Easy

In a frequency distribution, how do you calculate cumulative frequency?

💡 Hint: Start from the first frequency and keep adding.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the key requirement to identify the median class?

  • It must contain all data points.
  • Cumulative frequency must exceed n/2.
  • It is always the first class interval.

💡 Hint: Think about halves of data.

Question 2

True or False: The median is impacted heavily by extreme values.

  • True
  • False

💡 Hint: Consider the definition of median and how it handles data.

Solve 2 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Given a dataset with the following frequency distribution for weights: 40-50 (10), 50-60 (12), 60-70 (15), 70-80 (10). Calculate the median weight.

💡 Hint: Identify the cumulative frequency before applying the formula.

Question 2

Calculate the median of grouped data given by class intervals: 0-10 (3), 10-20 (7), 20-30 (15), 30-40 (5). Determine the median and discuss its significance.

💡 Hint: Focus on cumulative frequency for accurate median class identification.

Challenge and get performance evaluation