QIMPRO CHALLENGE-QIMPRO CHALLENGE-44

PARETO CHART ( POTHOLES IN PARETO CHART ( POTHOLES IN THE CITY )THE CITY )

SUBITTEDBY:SUBITTEDBY:

RASHI (B.TECH (CS) 2RASHI (B.TECH (CS) 2NDND YEAR) YEAR)

TWINKLE SINGHAL (B.TECH (CS) 2TWINKLE SINGHAL (B.TECH (CS) 2NDND YEAR)YEAR)

A pareto chartA pareto chart is a bar and line chart that displays data in a is a bar and line chart that displays data in a hierarchical order identifying where any given problem occurs most hierarchical order identifying where any given problem occurs most frequently. frequently. The objective of a Pareto chart is to identify the 20% of the places The objective of a Pareto chart is to identify the 20% of the places that account for 80% of the problem. Pareto identified that problems that account for 80% of the problem. Pareto identified that problems are not evenly distributed. And there is commonly an 80:20 rule. are not evenly distributed. And there is commonly an 80:20 rule. (Your data wont be exactly 80:20).(Your data wont be exactly 80:20).The bars display the number of events per area of interest.The bars display the number of events per area of interest.The line displays the cumulative % of events, i.e. the % of each bar The line displays the cumulative % of events, i.e. the % of each bar added onto the next together. So the bigger numbers will have a added onto the next together. So the bigger numbers will have a greater % impactgreater % impact

Why should a pareto chart be used?Why should a pareto chart be used?

In economic terms Pareto Charts are very beneficial . A Pareto Chart breaks a big problem down into smaller pieces, identifies the most significant factors, shows where to focus efforts, and allows better use of limited resources. You can separate the few major problems from the many possible problems so you can focus your improvement efforts, arrange data according to priority or importance, and determine which problems are most important using data, not perception. A Pareto Chart can answer the following questions: o What are the largest issues facing our team or business? What 20% of sources are causing 80% of the problems? Where should we focus our efforts to achieve the greatest improvements?

When should a pareto chart be used?When should a pareto chart be used?

A Pareto Chart is a good tool to use when the process we are investigating produces data that are broken down into categories and we can count the number of times each category occurs. A Pareto diagram puts data in a hierarchical order, which allows the most significant problems to be corrected first. The Pareto analysis technique is used primarily to identify and evaluate nonconformities, although it can summarize all types of data. It is the perhaps the diagram most often used in management presentations. Making problem solving decisions isn’t the only use of the Pareto Principle. Since Pareto Charts convey information in a way that enables us to see clearly the choices that should be made, they can be used to set priorities for many practical applications. Some examples are: Process improvement efforts for increased unit readiness, Customer needs Suppliers, Investment opportunities.

Potholes in Potholes in Mathura cityMathura city

Symptoms that account for 80% frequency

Water can get under the pavement through cracks or from the side of the road. Overtime the water can cause the materialUnder the pavement to erode, causing the pavement to sinkDown and break . During the winter , the water under the pavementFreezes then thaws. This freeze cycle can cause the pavement toCrack so that deteriorates quickly under the weight of traffic and Then streets can seem to break out in potholes ovemight.

Three problems based on theThree problems based on thepotholes in the city:potholes in the city:

1. Potholes damage to tires and vehicles : if a vehicle hits a deep , dreaded divot in the road, steering system. Mialignment to a full on tire puncture or vent rims may follow.2. Potholes may exhaust the system3. Potholes may cause expansion and contraction, create a bump

Lesson learned :Lesson learned :

1. Look for a break point in the cumulative percentage line. This point occurs where the slop of the line begins to flatten out. The factors under the steepest part of the curve are the most important.

2. If there is not a fairly clear change in the slope of the line, look for the factors that make up at least 60% of the problem. You can always improve these few, redo the Pareto analysis, and discover the factors that have risen to the top now that the biggest ones have been improved.

3. If the bars are all similar sizes or more than half of the categories are needed to make up the needed 60%, try a different breakdown of categories that might be more appropriate.

1. The measurement units can significantly affect your Pareto Chart. You must determine which factors are the most important. For example, using the chart above, it may change significantly if you were looking at the factors which cost the company the most money when examining scrap. For instance, bad material may cost the company more the tool changes when it comes to the cost of scrap.

2. It is essential to use the same units of measure and clearly mark these units on the chart.

3. Make sure the “other” category (if you chose to have one) doesn’t become unreasonably large. If your “other” category accounts for more than 25% of your problem, you should probably try to break it down.

THANK YOU!THANK YOU!