CBSEMathematicsClass 10

Statistics

Free cheatsheet for Statistics (CBSE Class 10). Mean, median, mode, cumulative frequency, ogive — all formulas with examples.

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What you get for “Statistics

One-Page Cheatsheet

All key formulas, definitions & concepts for Statistics — downloadable as PDF

5-Min Audio Podcast

Two-speaker summary you can listen to during commute or before sleep

10 Killer MCQs

Exam-pattern questions on Statistics with detailed explanations

Mind Map

Visual concept map showing how ideas connect — great for revision

Flashcards

Spaced repetition flashcards to memorize key facts and formulas

AI Comic & Video

Animated explainer video and illustrated comic for visual learners

Key Concepts Covered in This Cheatsheet

Mean of grouped data: Direct, Assumed Mean, Step-Deviation methods
Median formula for grouped data
Mode formula using modal class
Cumulative frequency (less-than & more-than)
Ogive curves (less-than & more-than type)
Finding median graphically from ogive
Empirical relationship: Mode = 3 Median - 2 Mean

Statistics Notes for CBSE Class 10 — Free AI Cheatsheet

Statistics in CBSE Class 10 is a high-scoring chapter — 8-10 marks guaranteed — and it's entirely formula-based, making it one of the easiest topics to master. The syllabus covers three measures of central tendency (Mean, Median, Mode) for grouped frequency distributions, plus Cumulative Frequency curves (Ogives).

Three methods exist for calculating the Mean: Direct method (∑fx/∑f), Assumed Mean method, and Step-Deviation method. Students often get confused about which to use — our AI cheatsheet provides a decision tree: use Direct for small numbers, Assumed Mean when values are large, and Step-Deviation when class widths are uniform. This alone saves 3-5 minutes in the exam.

The Ogive (cumulative frequency curve) question is guaranteed in boards. You'll be asked to draw either a "less than" or "more than" ogive and find the median graphically. The empirical relationship Mode = 3 Median - 2 Mean is a 1-mark MCQ favorite — memorize it. Our cheatsheet presents all central tendency formulas on one side and 5 solved examples (including a full ogive construction) on the other.

Why students prefer Coachingle for Statistics

  • Exam-focused: Every formula and concept is selected based on what CBSE actually asks — no filler
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Whether you're preparing for CBSE 2026 or 2027, Coachingle adapts to the latest syllabus. Generate your free Statistics study material now — it takes 30 seconds, and you'll wonder how you studied without it.

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Frequently Asked Questions — Statistics

What are the 3 methods of finding mean in Class 10 Statistics?
The three methods are: (1) Direct Method: Mean = ∑fx/∑f, (2) Assumed Mean Method: Mean = a + (∑fd/∑f) where d = x - a, and (3) Step Deviation Method: Mean = a + h × (∑fu/∑f) where u = (x - a)/h. Use step-deviation for fastest calculation when class widths are uniform.
What is the formula for median of grouped data Class 10?
Median = l + ((n/2 - cf)/f) × h, where l = lower limit of the median class, n = total frequency, cf = cumulative frequency of the class before the median class, f = frequency of the median class, and h = class width. The median class is the one where cumulative frequency first exceeds n/2.
What is the empirical relationship between mean, median and mode?
The empirical relationship is: Mode = 3 × Median - 2 × Mean. This is used when you know two of the three values and need to find the third. It's a guaranteed 1-mark MCQ in CBSE Class 10 Statistics — one of the easiest marks you can score.

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