Statistics
CBSE · Class 11 · Mathematics
Step-by-step guide to study Statistics in CBSE Class 11 Mathematics. Topics to cover, practice strategy, and time allocation.
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Study Plan
Learn the Theory
Read the textbook chapter carefully. Note down definitions, formulas, and key concepts.
Practice Problems
Solve textbook exercises and additional practice questions. There are 161 questions available for this chapter.
Revise & Test
Revise key formulas and concepts without looking at notes. Take a practice quiz to test your understanding. Mark weak areas for re-revision.
Spaced Revision
Revisit Statistics after a week. Use flashcards for quick recall. Solve previous year questions from this chapter.
What to Focus On
- Mean, median and mode are measures of central tendency.
- Statistics helps in collecting, organising, analysing and interpreting data.
- A central value alone does not describe spread or consistency.
- Range is a measure of dispersion.
- Range uses only the highest and lowest values.
- It gives only a rough idea of spread.
- Mean deviation is based on absolute deviations.
- Mean deviation can be taken about mean or median.
- The sum of deviations from the mean is always zero.
Common Mistakes to Avoid
Mean and median always give the full picture of a data set, so dispersion is unnecessary.
Range tells how all the data values are spread, so it is as complete as variance or standard deviation.
For median, the middle value is found the same way for odd and even number of observations.
Memory Tips
Meaning of statistics as the science of averages and their estimates
Measures of central tendency
Measures of dispersion studied in the chapter
Range formula
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for Statistics
Practice Quiz
Test yourself with a quick quiz
Important Questions
Practice with board exam-style questions
Revision Notes
Key points for last-minute revision
Formula Sheet
All formulas in one place
Chapter Summary
Understand the chapter at a glance
Concept Maps
See how topics connect visually
Flashcards
Quick-fire cards for active recall
Syllabus
What topics to cover
NCERT Solutions
Every textbook question solved step by step
For serious students
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Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for CBSE Class 11 Mathematics.