Frequency Distribution

Here we will discuss about the frequency distribution with examples.

(i) Unclassified Frequency Distribution:

Marks Obtained

4

20

30

39

40

45

49

50

65

70

79

80

90

Total

Number of Students

3

7

7

1

3

5

1

9

2

5

1

2

4

50

In the above table we have an example of unclassified frequency distribution. It shows the number of students obtaining certain marks. For example, the table shows 4 marks were attained by 3 students, 20 marks were obtained by 7 students, etc. So the frequency of 4 marks is 3, the frequency of 20 marks is 7, etc.


(ii) Classified Frequency Distribution:

Marks Obtained

From 0 to under 20

From 20 to under 40

From 40 to under 60

From 60 to under 80

From 80 to under 100

Number of Students

3

15 (i.e., 7 + 7 + 1)

18 (i.e., 3 + 5 + 1 + 9)

 8 (i.e., 2 + 1)

6 (i.e., 2 + 4)

                                Total number of students = 50

In the above table we have an example of classified frequency distribution. It shows the number of students obtaining marks between two numbers. For example, the table shows that 3 students obtained marks from 0 (included) to 20 (excluded), 15 students obtained marks from 20 (included) to 40 (excluded), etc. So the frequency of the class 0 to 20 (excluded) is 3, the frequency of the class 20 to 40 (excluded) in 15, etc.

The frequency of a class is the number of values of the variable appearing in the class.











9th Grade Math

From Frequency Distribution to HOME PAGE




Didn't find what you were looking for? Or want to know more information about Math Only Math. Use this Google Search to find what you need.



New! Comments

Have your say about what you just read! Leave me a comment in the box below. Ask a Question or Answer a Question.




Share this page: What’s this?

Recent Articles

  1. Formation of Square and Rectangle | Construction of Square & Rectangle

    Jul 16, 25 02:45 AM

    Construction of a Square
    In formation of square and rectangle we will learn how to construct square and rectangle. Construction of a Square: We follow the method given below. Step I: We draw a line segment AB of the required…

    Read More

  2. Perimeter of a Figure | Perimeter of a Simple Closed Figure | Examples

    Jul 16, 25 02:33 AM

    Perimeter of a Figure
    Perimeter of a figure is explained here. Perimeter is the total length of the boundary of a closed figure. The perimeter of a simple closed figure is the sum of the measures of line-segments which hav…

    Read More

  3. Formation of Numbers | Smallest and Greatest Number| Number Formation

    Jul 15, 25 11:46 AM

    In formation of numbers we will learn the numbers having different numbers of digits. We know that: (i) Greatest number of one digit = 9,

    Read More

  4. 5th Grade Quadrilaterals | Square | Rectangle | Parallelogram |Rhombus

    Jul 15, 25 02:01 AM

    Square
    Quadrilaterals are known as four sided polygon.What is a quadrilateral? A closed figure made of our line segments is called a quadrilateral. For example:

    Read More

  5. 5th Grade Geometry Practice Test | Angle | Triangle | Circle |Free Ans

    Jul 14, 25 01:53 AM

    Name the Angles
    In 5th grade geometry practice test you will get different types of practice questions on lines, types of angle, triangles, properties of triangles, classification of triangles, construction of triang…

    Read More