This document provides instructions on how to construct a bar graph, including the key elements needed. A bar graph is a graph that uses rectangular bars to show the magnitude or frequency of a variable. It must include axes, a title, labels for the axes, intervals on the scales, and bars that are either vertical or horizontal and have equal width and spacing. Examples are given of completed bar graphs showing monthly car sales, daily expenses, use of social media by gender, and exercises asking the reader to make bar graphs from given data sets.

1. HOW TO
CONSTRUCT

2. Fruit: Apple Orange Banana Kiwifruit Blueberry Grapes
People: 35 30 10 25 40 5
A survey of 145 people, asked them "Which is the nicest fruit?"
That group of
people think
Blueberries are the
most nicest fruit.

3. • A bar chart is a graph drawn using rectangular bars to show how large each
value is.
• Each bar represent one variant or attribute.
• The length of the bar is proportional to the magnitude or frequency of the
variable.
• The bars can either be horizontal or vertical

4. i. Axis – the lines on the graph you measure from to find a value. There are two
axes on a bar graph.
ii. Title – gives an idea of the information being presented in the graph. The title is
at the top of the graph.
iii. Labels – Tell what is being presented on each axis.
iv. Intervals – measure of the amount of the different group. Suitable scale should
be indicated and scale starts from zero
v. Bars – rectangular blocks that represent the data been collected. The width of the
bar and the gaps between the bars should be equal throughout.

5. 0
2
4
6
8
10
12
14
16
1-JAN 1-FEB 1-MAR 1-APR
Sales
Month
Monthly Car Sales in 2015
0 10 20 30 40 50 60
MON
TUE
WED
THUR
FRI
RM
Day
ExpensesTitle
Bars :
Vertical /
Horizontal
Label & x-axis
Label&y-axis
Label&y-axis
Intervals
Intervals
Label & x-axis

6. 0
2
4
6
8
10
12
1-JAN 1-FEB 1-MAR 1-APR
Sales
Month
Monthly Sales in 2014
Car
Truck
Boats
0 20 40 60 80
FACEBOOK
E-MAIL
OTHER SOCIAL
NETWORK
BLOG
TWITTER
Number of people
SocialMedia
Use of Social Media
Female
Male
Title
Bars :
Vertical /
Horizontal
Label & x-axis
Label&y-axis
Label&y-axis
Intervals
Intervals
Label & x-axis

8. 1. Make a bar chart for the following set of data:
Trianna's bookshelf contains 40 mysteries, 30 science fiction books, 10 non-fiction books,
50 comic books and 5 dictionaries.
2. The percentage of total income spent under various heads by a family is given
below :
Different Heads Food Clothing Health Education House Rent Miscellaneous
% Age of Total Number 40 % 10% 20% 15% 25% 6%
Represent the above data in the form of bar graph.