Download Free PDF of Measures of Central Tendency for Class 11 Statistics Chapter 5
FAQs on CBSE Class 11 Statistics NCERT Solutions Chapter 5 – Measures of Central Tendency [2025-26]
1. What are the main formulas in Class 11 Statistics Chapter 5?
The key formulas from Class 11 Statistics Chapter 5 – Measures of Central Tendency include the mean, median, and mode calculations, all essential for CBSE 2025 exams.
Important formulas:
- Arithmetic Mean (Ungrouped Data): Mean = (Sum of all observations) / (Number of observations)
- Arithmetic Mean (Grouped Data): Mean = (Σfixi) / (Σfi)
- Median (Ungrouped Data): Middle value after arranging data in order
- Median (Grouped Data): Median = l + [(n/2 – cf)/f] × h
- Mode (Grouped Data): Mode = l + [(f1 – f0)/(2f1 – f0 – f2)] × h
2. How do I calculate median for grouped data in NCERT Exercise 5?
To calculate the median for grouped data (as asked in NCERT Exercise 5):
Follow these steps:
- Find the cumulative frequency (cf) for the classes.
- Locate the median class: the class where (n/2) falls, where n is the total number of observations.
- Use the formula:
Median = l + [(n/2 – cf)/f] × h
where:- l = lower class boundary of median class
- cf = cumulative frequency before median class
- f = frequency of median class
- h = class width
3. Is there a free PDF for Class 11 Statistics Chapter 5 solutions?
Yes! Vedantu provides a free PDF download of NCERT Solutions for Class 11 Statistics Chapter 5 – Measures of Central Tendency.
- All solutions strictly follow the CBSE 2025 syllabus.
- PDF is provided for offline exam preparation and revision.
- No sign-up required.
4. How to use Vedantu's NCERT solutions for last-minute revision?
For last-minute revision of Class 11 Statistics Chapter 5:
- Begin with the quick revision guide and formula blocks.
- Review solved examples for mean, median, and mode step-by-step solutions.
- Practice unsolved exercises and then check the answers.
- Download the free PDF for offline study on exam day.
5. Are these CBSE-approved answers for 2025 board exams?
Yes, all answers are CBSE-approved for Class 11 Statistics Chapter 5 (2025 syllabus).
- Solutions are mapped to the latest official NCERT and CBSE curriculum.
- Updated regularly by experienced statistics educators.
- Follows proper marks-weightage and exam pattern.
6. What are Measures of Central Tendency?
Measures of Central Tendency are statistics used to represent a large set of data with a single value that best describes the entire distribution.
Main types:
- Mean: The average of all data values
- Median: The middle value when data is arranged in order
- Mode: The value that occurs most frequently in the data set
7. Which topics are included in NCERT Class 11 Statistics Chapter 5 syllabus for 2025?
The 2025 CBSE syllabus for Class 11 Statistics Chapter 5 covers:
- Definition and types of Averages (Mean, Median, Mode)
- Calculating mean (arithmetic mean, step deviation, weighted mean)
- Finding median in ungrouped and grouped data
- Mode calculation (simple and grouped data)
- Application-based and theory questions
8. How do I avoid common mistakes while solving measures of central tendency questions?
To avoid common errors in measures of central tendency:
- Memorise each formula and understand when to apply which (mean vs median vs mode).
- Read questions carefully to determine if data is grouped or ungrouped.
- Double-check calculations, frequencies, and cumulative totals.
- Write all steps clearly in your solutions (as modelled in NCERT and Vedantu solutions).
9. How can I get more practice questions for mean, median, and mode?
For more practice on mean, median, and mode in Class 11 Statistics:
- Use the Vedantu Important Questions and Worksheets for Chapter 5.
- Attempt previous year papers and sample exercises.
- Try chapter-end unsolved and extra questions.
- Explore online MCQs and case-based problems provided in the study material section.
10. Why should I trust Vedantu’s NCERT Solutions for Class 11 Statistics Chapter 5?
Vedantu’s NCERT Solutions for Class 11 Statistics Chapter 5 offer:
- Accuracy: All answers are prepared and reviewed by expert CBSE educators.
- Updated Syllabus Coverage: Solutions follow the latest 2025 CBSE and NCERT guidelines.
- Stepwise Explanations: Every question is solved in a clear and exam-oriented manner.
- Free Download & Peer Review: All material is fact-checked and free to access for students.

















