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Class 9 Maths Chapter 12

NCERT Solutions Class 9 Maths Chapter 12 Statistics

Class 9 chapter 12 statistics deals with information about how data can be presented graphically in the form of bar graphs, histogram and frequency polygons. The NCERT class 9 statistics enables the students to know the collection, analysis, interpretation as well as presentation of data information.

By practicing class 9 maths statistics solutions, students not only strengthen the understanding of the concept being studied but also enhance their problem solving ability. Every ncert class 9 statistics question is described clearly, giving the students an understanding of the concepts used in statistics. Such an exhaustive practice makes sure that learners are prepared for their exams because statistics is an important subject in mathematics which is essential for higher classes.

NCERT Solutions for  Class 9 Maths Chapter 12 - Statistics

In the above table, students can find chapter 12 statistics class 9 pdf which can be downloaded so students can access it anytime and anywhere. 

1.0NCERT Solutions Class 9 Maths Chapter 12 Statistics: All Exercises

In addition, answering such questions enables a student to discover his/her areas of weakness and be in a position to attend to them long before their examinations. This way the students get the confidence they need to succeed in exams through enhancing their statistics competence.

Exercises

Total Number of Questions

Statistics class 9 exercise 12.1

9

Statistics class 9 exercise 12.2

6

Statistics class 9 exercise 12.3

7

Statistics class 9 exercise 12.4

3

2.0What Will Students Learn in Chapter 12: Statistics?

  • A guide on how to gather and categorize raw information into valuable information.
  • Arithmetic mean, median and mode for describing data.
  • Methods including bar graphs, histograms and frequency polygon to display data.
  • Frequency and relative frequency, making cumulative frequency tables and cumulative frequency graphs.
  • Applying statistical methods to solve real problems that may involve data analysis and/or data interpretation.

Frequently Asked Questions

Grouped data is categorized into intervals (like class intervals in histograms), while ungrouped data is raw data that hasn’t been organized into intervals.

Cumulative frequency is the addition of all frequencies up to the end point of the grouped data. It comes in handy to estimate the proportion of observations that are less than a certain value in a given dataset.

The mean for grouped data is calculated using the formula: Mean = Σfixi / Σfi

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