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NCERT Exemplar Class 9 Maths Unit 14 Statistics and Probability

by aglasem
June 20, 2022
in 9th Class

Candidates can download NCERT Exemplar Class 9 Maths Unit 14 from this page. The exemplar has been provided by the National Council of Educational Research & Training (NCERT) and the candidates can check it from below for free of cost. It contains objective, very short answer type, short answer type, and long answer type questions. Along with it, the answer for each question has also been provided. From the NCERT Exemplar Class 9 Maths Unit 14, candidates can understand the level and type of questions that are asked in the exam.

Click Here for Class 9 Maths Notes

NCERT Exemplar Class 9 Maths Unit 14 Statistics and Probability

NCERT Class 9 Maths Unit 14 is for Statistics and Probability. The type of questions that will be asked from NCERT Class 9 Maths Unit 14 are displayed in the below provided NCERT Exemplar Class 9 Maths Unit 14. With the help of it, candidates can prepare well for the examination.

Also Check: NCERT Solutions for Class 9 Maths


Main Concepts and Results

Statistics
Meaning of ‘statistics’, Primary and secondary data, Raw/ungrouped data, Range of data, Grouped data-class intervals, Class marks, Presentation of data – frequency distribution table, Discrete frequency distribution and continuous frequency distribution.

  • Graphical representation of data :
    (i) Bar graphs
    (ii) Histograms of uniform width and of varying widths
    (iii) Frequency polygons
  • Measures of Central tendency
    (a) Mean
    (i) Mean of raw data

    (ii) Mean of ungrouped data

    (b) Median
    A median is the value of the observation which divides the data into two equal parts, when the data is arranged in ascending (or descending) order.
    Calculation of Median
    When the ungrouped data is arranged in ascending (or descending) order, the median of data is calculated as follows :

    (c) Mode
    The observation that occurs most frequently, i.e., the observation with maximum frequency is called mode. Mode of ungrouped data can be determined by observation/ inspection.

Probability

  • Random experiment or simply an experiment
  • Outcomes of an experiment
  • Meaning of a trial of an experiment
  • The experimental (or empirical) probability of an event E (denoted by P(E)) is given by
    P(E) = Number of trials in which the event has happened / Total number of trials
  • The probability of an event E can be any number from 0 to 1. It can also be 0 or 1 in some special cases.

Multiple Choice Questions (Solved Examples)

Multiple Choice Questions (Exercise)

Class 9 Important Questions for Maths - Statistics and Probability/

Short Answer Questions with Reasoning (Solved Examples)

Short Answer Questions with Reasoning (Exercise)

Class 9 Important Questions for Maths - Statistics and Probability/

Short Answer Type Questions (Solved Examples)



Short Answer Type Questions (Exercise)

Class 9 Important Questions for Maths - Statistics and Probability/

Long Answer Type Questions (Solved Examples)



Long Answer Type Questions (Exercise)

Class 9 Important Questions for Maths - Statistics and Probability/

Click Here to downoad NCERT Exemplar Class 9 Maths Unit 14 Statistics and Probability
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Answers

Multiple Choice Questions (Exercise)

Short Answer Questions with Reasoning (Exercise)


Short Answer Type Questions (Exercise)



Long Answer Type Questions (Exercise)


Maths Science

Tags: MathematicsNCERT ExemplarNCERT Exemplar Class 9NCERT Exemplar Class 9 MathsNCERT Exemplar Problems SolutionsNCERT Mathematics Solutions
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