qcl-14-v3_pareto diagram_banasthali university_tanya rathore
TRANSCRIPT
Presented by-Tanya RathoreSwati Suman
(BANASTHALI UNIVERSITY)
• Pareto Analysis is a statistical technique in decision-making
used for the selection of a limited number of tasks that produce
significant overall effect.
• It uses the Pareto Principle (also known as the 80/20 rule) that
by doing 20% of the work (Vital few), you can generate 80% of
the benefit of doing the entire job.
Arrange the rows in the decreasing
order of importance
of the causes
Form an explicit table
listing the causes and
their frequency
as a percentage
Add a cumulative percentage column to the table
Plot with causes on x-
and cumulative percentage
on y-axis
Join the above points
to form a curve
Plot (on the same graph) a bar graph with causes
on x- and percent
frequency on y-axis
Draw a line at 80% on y-axis parallel to x-
axis. Then drop the line at the point
of intersection
with the curve on x-axis. This
point on the x-axis
separates the important causes (on
the left) and trivial causes (on the right)
Explicitly review the
chart to ensure that
causes accounting to at least 80%
of the problems are
captured
1. Monsoon
2. Unmaintained cracks
3. Poor drainage 4. Concrete deficiency
5. Heavy traffic 6. Poor road design
7.Mechanical damage
S.no Cause Number of potholes(/50)
1 Poor drainage 10
2 Heavy traffic 3
3 Monsoon 17
4 Mechanical damage 2
5 Unmaintained cracks 12
6 Concrete deficiency 4
7 Poor road design 2
S . no Cause Number of potholes(/50)
Frequency(in %)
Cumulative frequency(in %)
1 Monsoon 17 34 34
2 Unmaintained cracks 12 24 58
3 Poor drainage 10 20 78
4 Concrete deficiency 4 8 86
5 Heavy traffic 3 6 92
6 Poor road design 2 4 96
7 Mechanical damage 2 4 100
0
20
40
60
80
100
120
Frequency(in %)
Cumulative frequency(in %)
• Through 80/20 principle , the three major
causes for potholes on the roads of Patna
are:
1. Monsoon
2. Unmaintained cracks
3. Poor drainage
Problems due to monsoon:
Problems due to unmaintained cracks:
Problems due to poor drainage:
1. Making canals for escape of water on roads.
2. Introducing proper drainage system.
3. Seal coating and crack repair.4. Pavement markings to avoid
accidents.5. Use of high strength and quick
repair mortars(masonry).
• Pareto analysis enables you to organize work-related problems into cohesive facts.
• Pareto analysis helps to determine the major causes which become the main focus for problem resolution or improvement.
• It enable better preparation and improvements in decision making for future challenges.