**Table Of Contents-**

1. Revision Notes Class 10 Math Chapter 14 : Introduction To statistics

2. A quick overview of Class 10 Math Chapter 14

3. List of the topics and subtopics covered in CBSE Class 10 Math Chapter 14

4.
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1. Revision Notes Class 10 Math Chapter 14 : Introduction To statistics

2. A quick overview of Class 10 Math Chapter 14

3. List of the topics and subtopics covered in CBSE Class 10 Math Chapter 14

4.

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**Revision Notes Class 10 Maths Chapter 14: Introduction to Statistics**

Class 10 Chapter 14 Maths notes are prepared by the subject experience teachers at Safalta. It includes all statistical concepts like grouped data, ungrouped data, measures of central tendency like mean, median, mode, methods to find mean, median, and mode, and the relationship between them, along with the important facts and formulae that are important to have a proper understanding of the chapter.

To have a quick overview of the important concepts of the chapter before the exams, download Class 10 Chapter 14 Maths notes free PDF through the link given here.

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**A Quick Overview of Class 10 Maths Chapter 14**

In Class 10 Maths Chapter 14, students will learn the three measures of central tendency that are mean, median, and mode from ungrouped data to that of grouped data.
Students will also understand the concepts of cumulative frequency, the cumulative frequency distribution, and how to draw cumulative frequency known as ogives.

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**Mean of Grouped Data**

The mean of the observation is the sum of all the values given in the observations divided by the total number of observations.

If y₁,y₂, y₃, y₄...yₙ are observation with respective frequencies f1, f2, f3, f4, ….,fn

Then, the mean of the yof the data is given by:

=

f1y1,f2y2,f3y3,f4y4,+.....+ynf1,f2,f3,f4,....fnf1y1,f2y2,f3y3,f4y4,+.....+ynf1,f2,f3,f4,....fn

**Mode of Grouped Data**

The mode of the is that value among the observations which occurs most frequently and is also defined as the value of the observation having a maximum frequency.

**Median of Grouped Data**

Median is defined as the measure of central tendency which obtains the value of the middlemost observation in the data.

If n is odd, then the median is the

term of the observations.

If n is even, then the median is defined as the average of the

(n2)th(n2)th

and the

(n+12)th(n+12)th

term of the observations.

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**List of the Topics and Subtopics Covered in Class 10 Maths Chapter 14**

14.1: Introduction

14.2: Mean of Grouped Data

14.3: Mode of Grouped Data

14.4: Median of Grouped Data

14.5: Graphical Representation of Cumulative Frequency Distribution

To have a detailed understanding of all the above topics discussed above, download Class 10 Maths Statistics Notes free PDF now. To download the full notes for this chapter, check out the table below and click the link to download-

Class 10 Maths Statistics Notes free PDF |

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**Class 10 Math Chapter Statistics Notes Benefits-**

The following are some of the advantages of using Class 10 Maths Chapter Statistics notes:

1.
The notes for Class 10 Maths Chapter Statistics are 100 percent correct because they were written by specialists after comprehensive research on the themes.

2.
The Class 10 Maths Statistics notes are available in PDF format, allowing students to review them whenever and wherever they want.

3.
Students can use the Class 10 Maths Chapter 14 notes to rapidly recall all of the previously acquired ideas in the chapter, which is especially useful during exams when they have to revise the entire curriculum in a short amount of time.

**Also check>>CBSE Term-2 Class 10 Social Science Syllabus 2022**

Source: Safalta.com

### How many methods are there in statistics class 10?

There are three methods to find mean## What does l mean in statistics?

In statistics, an L-statistic is a statistic (function of a data set) that is a linear combination of order statistics; the "L" is for

**"linear"**. These are more often referred to by narrower terms according to use, namely: L-estimator, using L-statistics as estimators for parameters

## What is the formula of mean for class 10 statistics?

**divide the sum of the observations by the total number of observations**.

## What are 3 methods to find mean?

**They are:**

- Direct Method.
- Assumed Mean Method.
- Step-deviation Method

## How is student Mark calculated?

**Mean=∑fixi∑fi**.

...

Class Marks | Frequency ( fi) | Midpoint(xi) |
---|---|---|

60-70 | 10 | 65 |

70-80 | 8 | 75 |

80-90 | 5 | 85 |

90-100 | 2 | 95 |