PARETO DIAGRAM

MADE BY:RUCHIKA MEHTA

PRIYANKA BHANSALISHRUTI AGRAWAL

INTRODUCTION • A Pareto chart, named after Vilfredo Pareto, is a type of chart that

contains both bars and a line graph, where individual values are represented in descending order by bars, and the cumulative total is represented by the line.

• The left vertical axis is the frequency of occurrence, but it can alternatively represent cost or another important unit of measure. The right vertical axis is the cumulative percentage of the total number of occurrences, total cost, or total of the particular unit of measure. Because the reasons are in decreasing order, the cumulative function is a concave function.

• The purpose of the Pareto chart is to highlight the most important among a (typically large) set of factors. In quality control, it often represents the most common sources of defects, the highest occurring type of defect, or the most frequent reasons for customer complaints, and so on.

STRATIFICATION OF SYMPTOMS

• A survey on 100 students was conducted to find out the different reasons and symptoms of bunking the lectures.

• Pareto diagrams are used to depict these symptoms. ->First tells about the different reasons.

->Second tells about the strength of the class before and after exams.

REASONS COUNT CUMULATIVE COUNT

CUMULATIVE FREQUENCY

Inferiority complex 65 65 9.103641457Private coaching 62

127 17.78711485Self entertainment 57

184 25.77030812Socialization 56

240 33.61344538Lack of interest 55

295 41.31652661Teaching skills 49

344 48.17927171Personal interest 45 389 54.48179272Excess homework 44

433 60.6442577Peer pressure 40

473 66.2464986Ragging 38

511 71.56862745

REASONS COUNT CUMULATIVE COUNTCUMULATIVE FREQUENCY

Lack of confidence36

547 76.61064426festivities 32

579 81.09243697Mental ability 30

609 85.29411765Exams preparation 30

639 89.49579832Over pampering 20

659 92.29691877Junk food 20

679 95.09803922illness 15

694 97.19887955Vacation or trips 12

706 98.87955182Poor infrastructure 8

714 100

inferiorit

y complex

private

coach

ings

self e

ntertai

nment

socia

lization

lack o

f subjec

t intre

st

poor tea

ching s

kills

lack o

f pers

onal intre

st

exces

s homew

ork

peer p

ressu

re

raggin

g

lack o

f confiden

ce

festiviti

es

mental

abilit

y

prep. o

f exa

ms

over p

ampere

d from fa

mily

junk food

not well

vacati

on or trip

s

poor infra

structu

re0

10

20

30

40

50

60

70

0

10

20

30

40

50

60

70

80

90

100

COUNTCUMULATIVE FREQUENCY

BEFORE TEST AFTER TEST 0

10

20

30

40

50

60

0

10

20

30

40

50

60

70

80

90

100

coun

t

Cumulative frequency

SYMPTOMS WITH 80% OR ABOVE FREQUENCY

1. Vacation2. Not well3. Junk food4. Over pamper5. Preparation of exams6. Mental ability7. Festivities

PROBLEM DEFINITIONS1. VACATION After vacations , majority bunks the class and extend their vacations according

to their wish.

2. NOT WELL Most of the people give the excuse of so called , ” I am not feeling well”.

3. JUNK FOOD For the sake of having junk food , students bunk the classesand prefer to sit in the canteen with friends.

4. OVER PAMPERINGFulfilling each and every wish of the child makes them stubborn.

5. MENTAL ABILITYSome students’ mental state is not set to study that subject.Hence,rather

then getting depressed they prefer to bunk the class.

LESSONS LEARNED

1. Bunking lectures may give momentary happiness but it will never last for long time.

2. If a single class is bunked , then one will understand nothing in the next classes.

3. Once one has bunked the class he/she will be tempted to bunk more and more lectures.