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CBSE Class 11 Informatics Practices — Formula Sheet

CBSE Class 11 Informatics Practices formula sheet, chapter by chapter — 29 formulas across 5 chapters. Follows the CBSE syllabus.

How to Use the Formula Sheet

  1. Write, don't just read — writing each formula out helps it stick.
  2. Understand the derivation — you can rebuild a formula you half-remember.
  3. Group related formulas — link the ones that build on each other.
  4. Test yourself — cover the sheet and write the formulas from memory.

Chapter-Wise Formulas — 5 Chapters

1

Computer System

5 entries
1 KB = 1024 Bytes
1 MB = 1024 KB
1 GB = 1024 MB
1 TB = 1024 GB
1 PB = 1024 TB
The full Computer System formula sheet
4

Working with Lists and Dictionaries

5 entries
list1 + list2
list * n
list[index]
list[start:stop:step]
for i in range(len(list1)): print(list1[i])
The full Working with Lists and Dictionaries formula sheet
5

Understanding Data

5 entries
Given $n$ values $x_1, x_2, x_3, \dots, x_n$, mean is computed as $\sum_{i=1}^{n}x_i$.
When all the values are sorted in ascending or descending order, the middle value is called the Median.
Value that appears most number of times in the given data of an attribute/variable is called Mode.
Range: M - S (Maximum – Minimum)
Standard Deviation: $$\Sigma = \sqrt{\frac{\sum_{i=1}^n (x_i - \bar{x})^2}{n}}$$
The full Understanding Data formula sheet

2 more chapters below

Formula sheets for all 5 chapters with formulas.

Get the Formula Sheets

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Frequently Asked Questions

Where can I find CBSE Class 11 Informatics Practices Formula Sheet?

This page has formula sheet for 5 chapters of CBSE Class 11 Informatics Practices for the 2026-27 session. Each chapter links to its own page with the full set.

Go through the syllabus first, then work chapter by chapter: learn the ideas, practise questions, and revise with notes and flashcards. Leave time at the end to revise every chapter once more under timed conditions.

Learn the formulas you use most first, and understand what each symbol means so you can apply them. Knowing where a formula comes from helps you rebuild it if you forget it in the exam.

Browse Formula Sheet by Chapter

5 chapters

1

Computer System

4

Working with Lists and Dictionaries

5

Understanding Data

6

Introduction to Numpy

8

Introduction to Structured Query Language (SQL)

More Informatics Practices Resources

CBSE Class 11

Practice Quiz

Test yourself with quick quizzes

Important Questions

Exam-style questions with answers

Revision Notes

Key concepts and quick revision points

Chapter Summary

Understand each chapter at a glance

Concept Maps

Diagrams showing how topics connect

Study Plan

Week-by-week preparation schedule

Flashcards

Quick-fire cards for active recall practice

Syllabus

Chapter list and the topics in each

NCERT Solutions

Every textbook exercise solved step by step

Other CBSE Class 11 Subjects

PhysicsChemistryMathematicsBiologyEnglishComputer ScienceAccountancyGeography