**Statistics**** Formulas for Class 9 Maths Chapter ****14**

Are you looking for Statistics formulas or important points that are required to understand Statistics for class 9 maths Chapter 14? You are the right place to get all information about Statistics Class 9 maths chapters 14. Statistics formulas play a vital role in preparing you for the class 9 exam as well as higher studies. Statistics formulas are very helpful for better scores in the exam. Check Statistics formulas according to class 9:

\[\ Mean\; \bar{x} = \frac{\sum x}{n}\] Where,x = Items given, n = Total number of items |

\[\ Range = Largest\; Value – Smallest\; Value \] |

If n is odd, \[\ Median = (\frac{n+1}{2})^{th}term\] If n is even, \[\ Median = \frac{(\frac{n}{2})^{th}term+(\frac{n}{2}+1)^{th}term}{2}\] where, n = Total number of items |

\[\ Variance = \sigma ^{2} = \frac{\sum (x- \bar{x})^{2}}{n}\] Where, x = Items given, x¯ = Mean, n = Total number of items |

\[\ Standard\;Deviation \; \sigma = \sqrt{\frac{\sum (x-\bar{x})^{2}}{n}}\] Where, x = Items given, x¯ = Mean, n = Total number of items |

#### Summary of Statistics

We have shared very important formulas for Statistics which helps to score in the class 9 exams. If you have any questions and doubts related to Statistics please let me know through comment or mail as well as social media. When you understand the formulas behind each Statistics topics then it would be easier to solve the most complex problems related to Statistics too.

#### Class 9 Maths Formulas By Chapters

- Chapter 2 – Polynomials
- Chapter 3 – Coordinate Geometry
- Chapter 7 – Triangles
- Chapter 8 – Quadrilaterals
- Chapter 9 – Areas of Parallelograms and Triangles
- Chapter 10 – Circles
- Chapter 12 – Heron’s Formula
- Chapter 13 – Surface Areas and Volumes
- Chapter 14 – Statistics
- Chapter 15 – Probability

#### NCERT Solutions For Class 9 Maths by Chapters

- Chapter 1 – Number Systems
- Chapter 2 – Polynomials
- Chapter 3 – Coordinate Geometry
- Chapter 4 – Linear Equations in Two Variables
- Chapter 5 – Introduction to Euclids Geometry
- Chapter 6 – Lines and Angles
- Chapter 7 – Triangles
- Chapter 8 – Quadrilaterals
- Chapter 9 – Areas of Parallelograms and Triangles
- Chapter 10 – Circles
- Chapter 11 – Constructions
- Chapter 12 – Heron’s Formula
- Chapter 13 – Surface Areas and Volumes
- Chapter 14 – Statistics
- Chapter 15 – Probability