Statistical Quality Statistical Quality ControlControl Basic ConceptsBasic Concepts AimAim ToolsTools AdvantagesAdvantages

Basic ConceptsBasic Concepts

When small samples are taken When small samples are taken continuously on a regular basis, continuously on a regular basis, and the data analysed and the data analysed statistically, valuable information statistically, valuable information can be derived.can be derived.

Control charts forms an integral Control charts forms an integral part of production process.part of production process.

Provides timely warning signal & Provides timely warning signal & for corrective action.for corrective action.

Basic ConceptsBasic Concepts

The effectiveness of control The effectiveness of control charts depends on how promptly, charts depends on how promptly, the warning is understood and the warning is understood and heeded and necessary action heeded and necessary action taken to correct the process.taken to correct the process.

Helps manufacturer in identifying Helps manufacturer in identifying and eliminating causes for and eliminating causes for defectives or failures in repetitive defectives or failures in repetitive production processes.production processes.

Basic ConceptsBasic Concepts

SQC is the primary analysis tool SQC is the primary analysis tool of quality improvement. of quality improvement.

It is the applied science that helps It is the applied science that helps you collect, organize and you collect, organize and interpret the wide variety of interpret the wide variety of information available to your information available to your business.business.

AimAim

To Achieve Defect Prevention.To Achieve Defect Prevention. To Pursue Never-ending Improvement.To Pursue Never-ending Improvement. To Reduce Variability, Delivery Times, To Reduce Variability, Delivery Times,

Completion Times, Methods, Attitudes, Completion Times, Methods, Attitudes, Equipment and Material.Equipment and Material.

To Produce Components Consistently To Produce Components Consistently within Specifications.within Specifications.

To give us Statistical Signal when To give us Statistical Signal when Special causes of Variation are Present.Special causes of Variation are Present.

ToolsTools

Flow chart to understand what is Flow chart to understand what is being done.being done.

Check sheets & tally charts to Check sheets & tally charts to observe the frequency of observe the frequency of occurrence of the process.occurrence of the process.

Graphs to see the pictorial Graphs to see the pictorial representation of the numbers.representation of the numbers.

Cause and effect analysis to study Cause and effect analysis to study the causes of the problems.the causes of the problems.

ToolsTools

Pareto analysis to segregate serious Pareto analysis to segregate serious problems from the minor once.problems from the minor once.

Scatter diagrams to study the relationship Scatter diagrams to study the relationship between various interacting factors.between various interacting factors.

Control charts to interpret and decide Control charts to interpret and decide which variations to control and go about.which variations to control and go about.

Histograms to appreciate as to how the Histograms to appreciate as to how the variations in frequency of occurrence variations in frequency of occurrence appear.appear.

AdvantagesAdvantages

Greater consistency in fulfilling Greater consistency in fulfilling customer's requirements leads to customer's requirements leads to greater customer satisfaction.greater customer satisfaction.

Reduced variation in internal Reduced variation in internal processes leads to less time and processes leads to less time and money spent on rework and money spent on rework and waste.waste.

AdvantagesAdvantages

Greater consistency in fulfilling Greater consistency in fulfilling customer's requirements leads to customer's requirements leads to greater customer satisfaction.greater customer satisfaction.

Reduced variation in internal Reduced variation in internal processes leads to less time and processes leads to less time and money spent on rework and money spent on rework and waste.waste.

What Next?What Next?

Material Planning BudgetingMaterial Planning Budgeting Material requirement planningMaterial requirement planning..