Diagram data

Frequency

Diagrammatic Representation of Data

Murrah

Surthi

Pandarpuri Breeds

Other graded

Non descript

Diagrammatic

Presentation of data Tabular

Line Diagram Bar Diagram Pie Diagram

Area Diagram Pictogram

Simple Bar Diagram Sub divided Bar Diagram

Percentage Bar Diagram Multiple Bar Diagram

Presentation of Statistical data 1. Tabular Presentation

2. Diagrammatic or Graphic presentation.

Advantages of Diagrammatic Representation

• • • •

Give a birds eye view of numerical set of data.

More appealing.

Highlight the salient features of the data.

Self explanatory

Types of Diagrams 1.

2.

3.

4.

5.

Line Diagrams Bar Diagrams Pie diagrams Area diagrams Pictograms

Moisture Protein Fat Ash Cholestrol

Line Diagram • Simplest of all diagrams.

• Consists of drawing vertical lines which mention the variable.

• X axis – Variable values are presented • Y axis – corresponding frequencies are presented.

Line Diagram Cattle population 5000000 4500000

4000000 3500000 3000000 2500000

2000000 1500000 1000000 500000

0

Amirthmahal

Deoni

Hallikar

Khillar

Non.descript

Bar Diagram • This consists of a group of equidistant rectangles or bars one for each group or category of data in which the values or magnitudes are represented by the length or height of the rectangles. • All the bars should be uniform and should be constructed on the same base line for a single study.

Bar Diagram Method of getting to school

Number of students

School bus

58

Car

7

Walk

35

Cycle

12

Public transit

18

Other

0

Types of Bar Diagram 1.

2.

3.

4.

Simple bar diagram Sub-divided or component bar diagram Percentage bar diagram Multiple bar diagram

Simple Bar Diagram • In this the magnitude of the observations are represented by the heights or lengths of the bar. • Limitation: It allows studying only one character only at a time.

Simple Bar Diagram Hallikar 2000 Livestock Population (In thousands) 2500 2000

1500 1000 500 0

Hallikar

Khillar

Khillar 452

Sub divided bar Diagram or Component bar Diagram • It is used to subdivide the magnitude of the given variable into various parts or sub-classes or components. • It useful for presenting several items or characteristics of a variable or a category simultaneously.

Sub-divided Bar Diagram Davangere Dharwad Gadag

Hallikar 73133 24364 13848

100000 80000 60000

Khillari Hallikar

40000 20000 0 Davangere

Dharwad

Gadag

Khillari 3473 30262 9586

Percentage bar diagram • Subdivided bar diagram presented graphically on percentage basis gives percentage bar diagram. • All the bars will be of same height with various segments of the bar representing the different components. • Used for diagrammatic portrayal of the relative changes in the data.

Percentage Bar Diagram 100% 80% 60% Khillari Hallikar

40% 20% 0% Davangere

Dharwad

Gadag

Multiple bar diagram • This is used if two or more sets of inter-related phenomenon or variables are to be represented. • It is similar to drawing of simple bar diagram but in this case a set of adjacent bars, one for each variable is drawn. • Proper and equal spacing is given for the sets of bars.

30000

Multiple bar diagram

25000 20000 Karnataka

15000

India 10000 5000 0 Rabbits

Horses

Ponies

Donkey

Multiple bar diagram Major nutrients in meat of different Animals 100 50 Moisture 0

Chic Beef Pork Lam Rab

Moisture 63

60

56

70

Protein

19 16.1 11.9 15

20

Fat

11

6

22

42

45

27

Protein Fat

Pie diagram/Angular diagram • This is circular diagram • Used to represent the total magnitude of various components. • The circle is divided into various sections or segments representing certain proportions or percentage of various component parts to the total.

Pie Diagram • The degrees represented by the various components of a given magnitude or quantity in a pie/circle can be obtained as follows Component value Χ 360

• Degree of any component= 1%

Total value

1%

Amirthmahal

29%

Deoni

Hallikar Khillar

63% 6%

Non.descript

Pictogram • Presenting Statistical data through pictures.

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