CBSE 9 Mathematics | 12. Statistics by Akhil | Learn Smarter with Allrounder.ai
K12 Students

Academics

AI-Powered learning for Grades 8–12, aligned with major Indian and international curricula.

Academics

Grades

Grade 8 Grade 9 Grade 10 Grade 11 Grade 12

Curriculum

CBSE ICSE IB
Professionals

Professional Courses

Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.

Professional Courses
Games

Interactive Games

Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.

games
Typing
Memory
Math
English Adventures
Knowledge
12. Statistics

Graphical representation of data is crucial for understanding and analyzing information efficiently. This chapter covers various types of graphical representations including bar graphs, histograms for continuous data, and frequency polygons. Key aspects include interpreting these graphs correctly and ensuring they accurately represent the underlying data.

Enroll to start learning

You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take mock test.

Sections

  • 12

    Statistics

    This section introduces graphical representations of data, including bar graphs, histograms, and frequency polygons, highlighting their effectiveness in data visualization.

    Learning Practice

  • 12.1

    Graphical Representation Of Data

    This section discusses the importance of graphical representations of data, highlighting bar graphs, histograms, and frequency polygons.

    Learning Practice

  • 12.1.A

    Bar Graphs

    Bar graphs are a graphical representation of data that use bars to compare different variables visually.

    Learning Practice

  • 12.1.A.1

    Example 1

    This section covers how to interpret a bar graph depicting the birth months of students.

    Learning Practice

  • 12.1.A.2

    Example 2

    This section introduces graphical representations of data, focusing on bar graphs, histograms, and frequency polygons.

    Learning Practice

  • 12.1.B

    Histogram

    A histogram is a graphical representation of frequency distributions for continuous class intervals, showcasing the relationship between data categories and their frequencies.

    Learning Practice

  • 12.1.B.1

    Example 3

    This section explores various methods for graphically representing data, including bar graphs, histograms, and frequency polygons.

    Learning Practice

  • 12.1.B.2

    Modification Of Histogram

    This section covers the graphical representation of data through histograms, including modifications needed for continuous class intervals.

    Learning Practice

  • 12.1.C

    Frequency Polygon

    A frequency polygon is a graphical representation that connects the midpoints of the upper sides of the bars in a histogram, providing a visual summary of frequency distribution.

    Learning Practice

  • 12.1.C.1

    Example 4

    This section covers various graphical representations of statistical data, focusing on bar graphs, histograms, and frequency polygons.

    Learning Practice

  • 12.1.C.2

    Example 5

    This section outlines graphical representations of data, focusing on bar graphs, histograms, and frequency polygons.

    Learning Practice

  • 12.2

    Summary

    This section focuses on the graphical representation of data, specifically through bar graphs, histograms, and frequency polygons.

    Learning Practice

  • 12.3

    Exercises

    This section consists of various exercises designed to apply the concepts of graphical representation of data, including bar graphs, histograms, and frequency polygons.

    Learning Practice

References

NCERT Study Material

Class Notes

Memorization

What we have learnt

  • Graphical representations l...
  • The construction of bar gra...
  • Histograms require consider...

Final Test

Revision Tests

Chapter FAQs