Types of charts and graph in statistics

Profit (million $$)	10	12	18	25
42

EXAMPLE

• A multiple bar chart is used to represent
distinct values for more than one item that
share the same category.

Subdivided bar chart

Chart Title
NUMVBER OF BOYS
NUMBER OF GIRLS
40
30
10
0
50
60
20
A
C
B
A line graph is a graphical representation of information that changes over a period of time.
It is a chart made by joining points using line segments.
A line graph or line chart or line plot is a graph that utilizes points and lines to represent change over time. It is a chart that shows a line joining several points or a line that shows the relation between the points. The graph represents quantitative data between two changing variables with a line or curve that joins a series of successive data points.

Line graph

• These are suitable for representing the data points, i.e. given one variable, the other can easily be determined.
• These enable observation of both short-term and long-term changes. This aids easy comparison of two or more values.
• Simpler to construct and read than bar graphs or histograms.
• Requires minimal written or verbal explanation.
• Projects patterns and trends over time better than other graphs.

Advantages of line graph

• It does not tell us anything about the causes behind the fluctuation in the data.

• It does not reveal much about the skewness or kurtosis of the data.
• The technique of drawing two or more line graphs on the same graph facilitates comparisons between the related phenomena. However, its use should not be recommended if the number of variables is large, say, more than.

Disadvantages of line graph

• A pie chart (also called a Pie Graph or Circle Graph) makes use of sectors in a circle. The angle of a sector is proportional to the
frequency of the data.
• A pie chart is a good way of displaying data when you want to show how something is shared or divided.

Definition of Pie-Chart

• Size of the circle can be made proportional to the total quantity it represents
• Summarize a large data set in visual form
• Be visually simpler than other types of graphs
• Permit a visual check of the reasonableness or accuracy of calculations
• Require minimal additional explanation
• Be easily understood due to widespread use in business and the media