《QC七大法精编版》由会员分享，可在线阅读，更多相关《QC七大法精编版（58页珍藏版）》请在金锄头文库上搜索。
1、Welcome to Training for Data Analysis Tools,1,Application of analysis tools,ISO9000 measurement analysis requirement - 08-S2.1-P1(顧客滿意的量度及監測) - 08-S3-P3 (品質審查會議) - 08-S4-P1(數据分析) - 08-S5.1-P1(持續改善),2,Application of analysis tools,The measurement and analysis for company and department objective / ta
2、rget. - QA: 95% test report will be completed within 4 days after get requisition form.,3,Common analysis tools (QC 7 tools),Check Sheet Pareto Diagram Cause Stratification Histogram Run Chart Control Chart,4,Quality Control Tools,Where to use : Stage 1. Find out problems: - Check sheet - Histogram
3、- Pareto diagram - Control chart Stage 2. Find out causes: - Cause & effect diagram - Scatter diagram,5,Quality Control Tools,Where to use : Stage 3. Analyze root cause and solve problem: - Histogram - Cause & effect diagram - Scatter diagram Stage 4. Check the effect: - Check sheet - Pareto diagram
4、 - Control chart,6,Computer Aided Software,MiniTab “Data analysis” software (in-house) Microsoft Excel,7,Check Sheet,Function: A data-gathering and interpretation tool to present - how often a problem is occurring - the type of problem occurring Accomplished with a simple listing of items. Is for th
5、e Pareto chart and Histogram chart preparation,8,Check Sheet,Case study - #1 dimension of a plastic part,9,Check Sheet,Case study - # 2 customer complaint:,10,Pareto Diagram,Vilfredo Pareto (1848-1923) Italian economist - 20% of the population has 80% of the wealth Juran used the term “vital few, tr
6、ivial many”. He noted that 20% of the quality problems caused 80% of the dollar loss.,11,Pareto Diagram,Trivial many,Diagram:,12,Pareto Diagram,The Parato Diagram, used to determine priorities for quality improvement activities, is a bar chart that display the relative frequency of problems in a pro
7、cess or operation. Bars present the relative frequency of a problem Bars are arranged in decreasing order. A curve is superimposed to indicate the accumulative percent of problem.,13,Pareto Diagram,A Pareto chart can be used to decide: Which subsets should be solved first Which problems deserve the
8、most attention. To provide a before-and -after comparison.,14,Pareto Diagram,Case study: #1 defects of a tea pitcher before and after improvement,15,Pareto Diagram,16,Pareto Diagram,Case study: #2 Customer return qty & cost,17,Pareto Diagram,Case study: #2 Customer return qty & cost.,18,Cause and ef
9、fect diagram,Function: Identify the possible root causes, the basic reasons, for a specific effect, problem, or condition. Sort out and relate some of the interactions among the factors affecting a particular process or effect. Analyze existing problems so that corrective action can be taken.,19,Cau
10、se and effect diagram,Diagram:,20,Cause and effect diagram,The cause and effect diagram is also called the fishbone chart because of its appearance. Example of skeleton construction: - Method, Machine, Material, Man - Equipment, Procedures, People, Policies,21,Cause and effect diagram,Case study - #
11、1: The cause of the Pizzas taste Baking temperature/time Bread type Baking powder type Recipe Pizza oven setting Frozen time Pizza oven operation,22,Cause and effect diagram,Case study - #1: The cause of the Pizzas taste,23,Cause and effect diagram,Case study - #2: Customer dissatisfaction Product q
12、uality - not meet customer requirement - poor reliability Service - late response Order processing system - complicated,24,Cause and effect diagram,Case study - #2: Customer dissatisfaction Order fulfillment - Delay delivery - Short quantity Quotation system - Longer time - High price,25,Cause and e
13、ffect diagram,Case study: #2, Minitab Quality tools Cause & effect.,26,Scatter Diagram,Function: To study and identify the possible relationship between the changes observed in two different sets of variations.,27,Scatter Diagram,Diagram:,28,Scatter Diagram,strong positive correlation,positive corre
14、lation,strong negative correlation,negative correlation,no correlation,29,Scatter Diagram,The Scatter Diagram shows the pattern of relationship between two variable that are thought to be related. The closer the points hug a diagonal line the closely there is a one to one relationships.,30,Scatter D
15、iagram,Case study - #1 Supplier scale and its rating,31,Scatter Diagram,Case study - #1, relationship between the worker Use MS Excel to plot the scatter diagram,No obvious relation was found between this two variables,32,Scatter Diagram,Case study - #2 Training endurance & Attendance rate,33,Scatte
16、r Diagram,Case study - #2 Training endurance & Attendance rate (overall),No obvious relationship was found between this two variables,34,Scatter Diagram,Case study - #2 Training endurance & Attendance rate (Use stratification method - for Chaiwan office),No obvious relationship was found between this two variables,35,Scatter Diagram,Case study - #2 Training endurance & Attendance rate (Use stratification method - for XF training room),Negative rel
