This document discusses bar diagrams and their components. It defines a bar diagram as a chart that uses rectangular bars to present qualitative data, with the bar lengths proportional to the values. It notes that qualitative data deals with descriptions that can be observed but not measured, such as colors, textures, smells, tastes, and appearances. The key components of a bar diagram are collecting qualitative data, drawing and labeling the x- and y- axes, and drawing the bars. An example bar diagram and table show the numbers of children who favorite different cartoons. Finally, it lists different types of bar diagrams like horizontal, grouped, and stacked bar charts.

1. Statistics & Probability
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2. GROUP NAME
PROBABILITIES
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3. GROUP MEMBERS
Ashraful Islam Sheiblu
ID:152-35-1129
Bishnu Chandra Sutradhar
ID:152-35-1130
Ratan Hazra
ID:152-35-1131
Mehedi Hasan Rimon
ID:152-35-1135
Talha Ahmed
ID:152-35-1138Page: 3

4. TOPIC NAME
BAR DIAGRAM
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5. What is bar diagram ?
A bar chart or bar diagram is a chart that present qualitative
(grouped) data with rectangular bars with lengths proportional
to the values that they represent. [N:B: In this type diagram,
rectangular bars must be separated from each other by same
distance. ]
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6. ABOUT QUALITATIVE DATA
•Deals with descriptions.
•Data can be observed but not measured.
•Colors, textures, smells, tastes, appearance,
beauty, gender, favourite etc.
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7. COMPONENTS OF BAR DIAGRAM
 Collecting qualitative data
 Drawing a X and Y axis
 Label the X axis
 Label the Y axis
 Drawing the bars
a
b
c
variable variable variable
Y – axis
x–axis
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8. AN EXAMPLE OF BAR DIAGRAM
Figure 1: Numbers of children
favorite cartoon Tom & Jerry, Doraemon
& Super man .
Cartoon
Name
Number of
Child
Tom & Jerry 8
Doraemon 7
Super man 5
Total 20
Table 1: A Uni-variate table of 20
children favorite Tom & Jerry,
Doraemon & Super man Cartoon.
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9. DIFFERENTS TYPES OF BAR DIAGRAM
•Horizontal Bar Diagram
•Grouped Bar Chart
•Stacked Bar chart
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10. VIEW of BAR DIAGRAM
Fig2 - Horizontal Bar Diagram
Fig4 - Stacked l Bar Diagram
Fig3 - Grouped Bar Diagram Page: 10

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