Bar Chart is one of the graphical ways
of data representation and especially useful for comparing values of
different products/ items/ categories over a given time period. Bar
Charts, also known as Bar Graphs, provide an effective visual display
to help get a better understanding of the relationships between the
respective quantities of the various data categories.
A bar chart comprises of sub parts,
which are as under:-
Title :- It summarizes the type of
data represented in the graph
Labels :- These specify the
categories of data
Bars :- These are used to
represent the quantity with respect to a specific category
Grid lines :- These are used to
create the scale.
Axis (X & Y) :- These are used to represent category
names and their value range.
Although bar charts form the simplest
way of data representation, but they can be of various types such
Simple Bar Chart :- It is used to
display only one set of continuous variable.
Composite Bar Chart :- It is used to
display two or more sets of continuous variables in one chart.
Deviation Bar Chart :- It is used to
display one set of continuous variable, having both positive and
negative values. Stacked Bar Chart :- It is used to
display the break-up of a continuous variable and for comparing two
or more sets of data.