diagrams theory

1. PROGRAMME B.COM
SUBJECT
QUANTITATIVE TECHNIQUE – I
SEMESTER III
UNIVERSITY VIJAYANAGAR SRI
KRISHNADEVARAYA UNIVERSITY,
BALLARI
SESSION 18

2. RECAP
• Present Data in Textual and Tabular Format
Problems--------- 02

3. LEARNING OBJECTIVES
• After Studying this unit, the students able to know
how to present data Graphically using Histogram,
Frequency Polygon and Curve, and Pie charts and
working out cumulative frequency

4. LEARNING OUTCOMES
• Students will be able to analyze and interpret with
in the Contexts they are written in Diagrams and to
present data Graphically using Histogram,
Frequency Polygon and Curve, and Pie charts

5. SESSION - 18
• Introduction, Types of Diagrams

6. Introduction of Diagrams
• Diagrammatic Presentation of Data gives an
immediate understanding of the real situation to be
defined by data in comparison to the tabular
presentation of data or textual representations.
• Diagrammatic presentation of data translates pretty
effectively the highly complex ideas included in
numbers into more concrete and quickly
understandable form.
• Diagrams may be less certain but are much more
efficient than tables in displaying the data.

7. CONTD
• General Guidelines of Diagrams
Title – Every diagram must be given a suitable
‘Title’ which should be small and self-explanatory.
Size – Size of the diagram should be appropriate
neither too small nor too big.
Paper used – Diagrams are generally prepared on
blank paper.
Scale – Under one-dimensional diagrams especially
‘Bar Diagrams’ generally Y-axis is more important
from the point of view of the decision of scale
because we represent magnitude along this axis.
Index – When two or more variables are presented
and different types of line/shading patterns are
used to distinguish, then an index must be given to
show their details.
Selection of Proper Type of Diagram – It’s very
important to select the correct type of diagram to
represent data effectively.

8. Types of Diagrams
• Diagrams are various geometrical shape such as bars,
circles etc. Diagrams are based on scale but are not
confined to points or lines. They are more attractive
and easier to understand than graphs.
• Types of Diagrams
1. One Dimensional Bar Diagram
( Simple and Sub Divided Bar Diagram Percentage
and Sub Multiple Bar Diagram)
2. Two Dimensional Bar Diagram
(Squares, Pie Diagram and Rectangle Bar Diagram)

9. SUMMARY
As we already discussed and learnt today on
Diagrammatic and Graphical Representation as below
• Introduction, Types of Diagrams

10. MCQs
1 . The mode of presentation of data are
a) Textual, Tabulation and Diagrammatic
b) Tabular, Internal and External
c) Textual, Tabulation and Internal
d) Tabular, Textual and External
2 . The best method of presentation of Data is
a) Textual
b) Tabular,
c) Diagrammatic
d) (b) and (c)

11. MCQs
3 . Diagrammatic representation of data is done by
a) diagrams
b) charts
c) pictures
d) All these
4 . The most attractive method of data presentation is
a) Textual
b) Tabular,
c) Diagrammatic
d) (b) and (c)

12. MCQs
5 . Hidden trend, if any, in the data can be noticed in
a) Textual representation
b) Tabulation
c) Diagrammatic representation
d) All these

13. CONTD
ANSWERS
1. A
2. B
3. D
4. C
5. C

14. REFERENCES
• S.P. Gupta, Sultan Chand and Sons Publications, 2017
• S. C. Gupta, Himalaya Publishing House,
Fundamentals of Statistics, 2018
• R.S.N Pillai and Bagavathi, S.Chand publications, 2010

15. THANK YOU