Skip to main content
Super TutorResources
Chapter 10 of 12
QuestionsNotesFlashcardsSummaryFormulasQuizConceptsSyllabusPlan
Revision Notes

Descriptive Statistics

CBSE · Class 11 · Applied Mathematics

Quick revision notes for Descriptive Statistics — CBSE Class 11 Applied Mathematics. Key concepts, formulas, and definitions for last-minute revision.

44 questions24 flashcards5 concepts

Interactive on Super Tutor

Studying Descriptive Statistics? Get the full interactive chapter.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for revision notes and more.

Try Super Tutor — Free

1,000+ Class 11 students started this chapter today

Key Topics to Revise

1

Types of Data and Data Sources

  • Data is plural - always refers to a group of numbers; one piece of information is called a datum
  • Primary data: Collected directly from the field or individuals through surveys, observations, case studies
  • Secondary data: Obtained from already collected sources like records, databases, reports
2

Data Measurement Scales

  • Nominal Scale: Categories with no natural order (e.g., gender, religion, subjects taught)
  • Ordinal Scale: Categories that can be ranked but differences between ranks are not uniform (e.g., performance ratings: poor, average, good)
  • Interval Scale: Equal intervals between consecutive values, can have negative values (e.g., temperature, coordinates)
3

Data Representation and Visualization

  • Bar Graph: Rectangular bars with equal width, used for categorical data comparison
  • Pie Chart: Circular chart divided into sectors, shows parts of a whole (360° total)
  • Line Graph: Connects data points with lines, typically shows changes over time
4

Measures of Central Tendency

  • Mean: Arithmetic average, affected by all values including outliers
  • Median: Middle value when data is arranged in order, not affected by outliers
  • Mode: Most frequently occurring value in the dataset

Get complete notes with diagrams and examples

Full Notes

Key Concepts

Data can be classified based onFour scales existGraphical representation includes bar graphs (comparingMean (arithmetic average) = sumRange (difference between max and min

Frequently Asked Questions

What are the important topics in Descriptive Statistics for CBSE Class 11 Applied Mathematics?
Descriptive Statistics covers several key topics that are frequently asked in CBSE Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Descriptive Statistics — CBSE Class 11 Applied Mathematics?
Understand the core concepts first, then work through the 44 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Descriptive Statistics

All 12 chapters — CBSE Class 11 Applied Mathematics Revision Notes

For serious students

Get the full Descriptive Statistics chapter — for free.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for CBSE Class 11 Applied Mathematics.

Try Super Tutor Free
Try the full chapter — Free