- SPC for Short Runs (Control Limits) vs. Precontrol charts (Specification Limits)
- Interesting Web Sites, Boards & other resources on Stats
- Specifications on x & r charts - Print specifications apply to all individual parts?
- Statistical Hypothesis Testing to prove signficant quality improvement or decline
- Yates Algorithm as it applies to DOx or Regression
- Capability Studies - Combining parts from two lots
- p charts - My experience with P charting has not been good
- Capability, FMEA and PPAP - 4.9.2 - The meaning of "high degree of capability"
- 4.10.6.6 Laboratory Statistical Methods
- Range - Concepts such as mean, median, mode and range
- Control Charts for Non-Normal Distribution
- Dimensional Characteristics Rating:Guidelines for specifying Special Characteristics?
- Using SPC charts for Verification of Job Setups
- Can/should SPC be used in administrative areas, purchasing, sales, planning...
- Calculating PPM - Standard practice to calculate PPM from parts returned?
- How does one calculate Cpm (Taguchi process capability)
- How to implement SPC in a CNC m/c shop processing small batches of 'one timer' jobs?
- Tips on Stat. Techniques in Bulk Material Process?Reduction of alumina to Aluminium
- Introductory Statistics - Websites that I hope you'll find useful
- DPM (Defect parts per million opportunity) vs. PPM
- Process Capability - Long-term vs. Short-term
- Control chart application for post heat treat processes
- Testing for Process Confidence - Sample Size
- Not enough discrimination? 4-digit Micrometer for .0015 Tol :burr ht of slit coils
- Any recommendation on DOE/Statistical Analysis Software?
- Precontrol and Process Capability - CNC Lathes that run small batches - Short Runs
- How to Calculate Average CV (Coefficient of variation)?
- Conflicting dimensions - Cable and wire industry and application of SPC
- Process control - Finished product vs. Tooling
- SPC for productivity - Monitor the productivity level?
- Confidence intervals - Provide a point estimator?
- How many SPC charts for Bolt Torque? 4 identical Nut/Bolts in the same part
- Cmk calculation - Small plastic parts using injection-moulding machine
- SPC from Each Cavity? Small Plastic Parts using Injection Molding Machine
- Hypothesis Testing
- Tool Wear Control Charts to Help Control Machine Tool Offsets
- Linearity - Minimum and maximum value for acceptance of the equipment?
- Question on how to analyze Customer Survey Results
- Looking for Printed Control Chart blanks
- Capability Study - Feasible? Capability Study when there is No Set Target Value
- Capability studies with less than 125 individual samples.
- Capability Studies - 5 different dimensions - How many parts?
- What is Cgk? (Index of Testing Means Capability)
- Statistical methods in ISO 9001:2000
- Can anyone enlighten me as to what exactly Cm / Cmk are?
- Control Charts and sample size for automatic measurement
- Multi-Cavity Capability Studies
- Implementation of SPC - Gears - Hobbing, shaving, grinding is 5 to 50 microns
- SPC (minimizing defects) Vs Poka Yoke (zeroing out defects)
- Unilateral tolerance capability assessments
- Deming vs. Statistical Hypothesis Testing
- Run Charts - Plots of process characteristics against time or sequence
- Statistically Valid Sample Sizes For SPC
- Reactions to out of control X bar and R charts?
- What are the accepted standard rules for SPC analysis ?(7 points rising, WECO, etc.)
- Reducing the Number of SPC Charts used: We have many highly capable processes
- Trying to set up a serious PPM system - Parts per Million
- Fabric Dying - Sample Technique - Sample size to check evenness of dyeing shade?
- Debalancing machine - is SPC needed?
- Where can I find Process & Machine Capability study software?
- Unilateral Tolerance Capability - Shaft Runout - Which capability index to use?
- SPC in Injection Moulding and Metal Pressing/Stamping
- Capability Studies - Do I need to use subgroups?
- How are the d2 values for subgroup sizes derived?
- VisualSPC: Anyone else using this software? Resistance from experienced operators
- Converting DPMO to SIGMA - Seeking Forumula
- Book reviews for SPC & SIGMA.
- Cmk - What is the difference between an R&R study and Cmk?
- What is the cut off value of coeffcient of variation ( %)
- Beyond CQE: Any suggestions to improve my knowledge further?
- Process Capability with GD&T bonus tolerance
- Determining Machine Capability and Process Capability of a Shaft
- ISO 9000:2000: Question about Statistical Techniques
- How to Determine a Machine Capability? Shaft Fit Tolerance Measurement Results
- Machine Capability Studies: How many parts needed?
- Customer Satisfaction Questionnaire: What Sample Size Do I Need for the Survey?
- Calculating DPMO for Exponential Distributions
- MTTR - Quick and dirty way to calculate Mean Time To Repair - Solenoid valves
- Unbiased Estimators for Sigma? Is 's' an alternative to RBar/d2?
- Industry DPMO Standards - Contract Electronics Manufacturing processes
- Valid study for CO samples both Analyzer and Drager Tube results?
- Poisson & Bi-Nomial Distributions: What's the difference? When to use?
- Control Plans - Is it acceptable to put n/a's on a Control Plan where data is taken?
- Non-normal Distributions in SPC - How do I Normalize Data?
- Failure Reporting
- Stastistical Techniques in Chemical Industry
- Template for Capability Study
- Johnson's Transformation Distribution Model
- Out of Control patterns for non-normal distributions
- Assessments of Normal Distribution - Formulae for CHI squared, Kurtosis and Skew
- Control limit - How is table for x-bar & R control chart derived?
- What frequency and sample size is 'normal' for SPC?
- Target Magazine - A publication of the Association for Manufacturing Excellence
- Seeking: Information on ISO 11462-1:2001
- Cpm versus sample size
- Help with Coefficient of Variation
- Short Run SPC with Tool Wear
- Western Electric Statistical Quality Control Handbook
- Table of Constants for Control Charts
- How to deal with nonrandom samples?
- Real World Usage Profile
- Statistical Analysis applications in Human Resources
- Normality Assumption - Most Tests 'Assume' a Normal Distribution - t test statistic
- Changing specification limitation limits - What effect on Process Capability
- Statistically Determining how many Tests to conduct.
- How to calculate a True Position toleranced at MMC - Capability of True Position
- Control Limits - Can't be smaller than 3 times your measurement increment?
- Sample Size and Frequency - In-process monitoring in a mass production shop
- Initial Process Studies - Number of samples - 100 for Individuals Chart?
- Data Management - Quantity of digitally captured data
- Non-normal Distributions in Statistical Process Control
- Capability Study - Making wine bottle corks - Length
- SPC Program Demo
- Help With A Statistical Problem
- Probability of Defects - A Problem
- DPMO (Defects Per Million Opportunities) Calculation
- Sample Sizes and A2, A3, B4, d2 Factor Parameters
- How to assess Process Capability for parallelism
- Herramientas estad?sticas
- Black Belt Training - My current BB journey
- Multidimensional Scaling
- Statistical Process Control - ISO 11462-2:2001 Key elements of an SPC System
- What type of control chart...
- Empezando con SPC
- Statistical Tools outside of SPC
- empezando con SPC
- PPM - Determining Parts Per Million to measure our incoming goods rejections
- Should I use Xbar-R chart?
- Comparison of two test equipments
- BSR/ISO/ASQ S11462-1-2001
- Has anyone implemented SPC in the Laboratory Testing/Service Industry
- How to Calculate Z Score Values
- SPC Control Limits Review Frequency
- PCB (Printed Circuit Board) Assembly - Wave Solder Capability
- SPC training games - Basic training for manufacturing shop-floor guys and engineers
- Statistical Tolerancing - Monte Carlo simulation in Statistical Tolerancing
- Capability - Process vs Product - Look at process characteristics to improve product?
- Attribute Control Chart Question - I plan to use to np chart
- Cgk - The Kolmogoroff (Kolmogorov-Smirnov) Method
- Fast Runs - Four lots, one day each, every month - What chart to use?
- Geometric Tolerancing and SPC - Calculating position upper and lower control limits
- Creating Internal customers within the manufacturing process
- Short run SPC Seminars?
- Flow Solder Control Chart - I believe I need an Xm-R chart
- Opening Design Limits to Accomodate Process Capability
- How can I do the Red Bead Experiment? Hotel Industry
- ISO 11462-1 Guidelines for implementation of Statistical Process Control (SPC)
- Metrics to monitor process improvement
- Seeking Help: Design of Experiments - DOE
- Statistical Measures of Complaints
- Master Black Belt vs MS Applied Statistics
- What are the Odds of That - About coincidence
- Moving Range charts and capability?
- How can I determine the kind of distribution - What about Bionimal or Poisson?
- Non-Normal Data - Transforming the Data to Normal
- Statistics to define the capability of operator controlled manual machines
- What are Process Capability and Process Stability?
- Seeking: Links or materials about Shainan techniques
- Case studies where Monte Carlo Simulation applied to Maintenance, uptime prediction
- SPC tools for wall thickness and weight - Suggestions?
- Electronically Challenged
- Precision of tolerance - Test validation
- Unilateral / Bilateral Tolerances for dimensions with Double Plus or Minus Tolerance
- Seeking: Control Charts - Xbar R control chart
- Understanding PPM accuracy on a Laser Tracker
- Understanding Calibration Results on CMM Reports
- SPC for Improvement? (was PreControl) SPC is great for stability!
- Which SPC Chart should I use? XbarR, Range, XmR, p, np, c, u, Zero Mean?
- Complaints Response Times
- Short Run Capability - Batch quantity is 15,000 to 20,000
- What is Statistical Tolerancing? How to apply it to a product?
- Minimum number of Subgroups to assess Process Capability
- Does the data in a control chart have to be normally distributed?
- Control Chart Rules - Trend and Statistics Explainations
- Normal Distribution - How do I test for normality? All the data or just the averages?
- Statistical technique sought for predicting replacement of perishable tooling
- Capability - How to calculate Capability Indices for Non-normal Distributions
- When is a process considered to be capable?
- Demonstrating Capability in 'Goalpost' World
- Surveys: Number of Responses
- Internal Calibration Laboratory Requirements - Ambient temperature, Humidity, Etc.
- Button Test - Tactility Criteria
- MTBF (Mean Time Between Failures) - Seeking help
- ISO 16269-7 Statistical interpretation of data
- How can I start explaining and training SPC in my company?
- Skip-Lot Testing and the FDA - Reduced Testing Plan for Raw Materials
- Empirical Study on Canadian Companies
- Sample Size Calculation for PPM (Parts Per Million) Prediction
- SPC Help - Probability of SL=CL
- Looking for Quality Games - Manufacturing environment
- Standard or a Good Rule of Thumb for Finding Part Weight
- Calculating Process Average Targets for LSL (Lower Specification Limit) Only
- Statistics for Dummies - Book, class, or tutorial to help me understand
- Control charts to trend data for multiple dependent variables? Hotelling's T^2 stat
- Modified Control Limits - Process that has points out of control
- Pre-control Software
- Machine Capability Studies on CNC Lathes
- 76/211/EEC 2.3.3.1 Criteria for Non-Destructive Testing
- Calculating Manufacturing efficiencies
- Failure Mode SPC
- How To Use A Control Chart
- Acceptable Outgoing Quality Level (AOQL) aka Acceptable Outgoing Quality (AOQ)
- Grubbs test to determine one outlier to normalize data
- Using SPC for DOE - Just Curious
- Simple Probability Statistics - Assembly Failure - Binomial Equations
- AIAG Statistical Process Control (SPC) Manual - Page 81
- SPC on Multiple Cavities - Customer wants SPC done on each notch - Cylindrical part
- Multivariable Control Chart - Target, Short Run, Group charts, T2, etc.
- Calculating PPM for Customers - Is this fudging PPM #'s?
- Pre-Control Chart - Limits are set at 2/3 of the specification
- T tests - To test for central measure (means) - Steel supplier
- Where to find a good "STATISTICAL" and/or a good "GD&T" font for windows?
- Multi-vari analysis - Core diameter oversize
- Portable SPC Data Collectors and Industrial 'Hardened' Computers
- Great NIST Stats Reference
- Seeking: Origin and History of PPM (Parts Per million)
- How to count the UCL for MEWMA (Multivariate Exponentially Weighted Moving Average)
- Capability Calculations: Non-Normal Distributions and One Sided Distributions
- Position Deviation: Is it a Dependent or Independent Variable?
- Table for converting Cp values into corresponding Capability %
- DOE (Design of Experiments) Help: Montgomery's Industrial Engineering book
- How to make use of data captured in an ATE tester
- Defining Pre-Control Zones - Statistical Process Control (SPC)
- Standard Deviation - Process Output is Stable and Normally Distributed
- Measuring Daily Cycle Counting Inventory Accuracy
- Confidence Interval Question - The calculations ASSUME you know the true population
- How many attribute samples from a lot with zero defects?
- Validation question - When our maintaince department adjusts a station or machine
- Control Method - Diamond Drill Machining Operation
- Need statistical Jpeg and bitmap graphics
- Using DMAIC to reduce equipment downtime
- CPAS - RCCA - 8-D Report Requirements
- WinSPC - Operators not noting any reactions to Out of Specification conditions
- Is there any way to prove a process is in control other than with a control chart?
- Does anyone use Median Charts instead of Xbar & R charts?
- SPC charts with Fixed Control Limits? Seam width and stitches per inch
- SPC control for one-sided specification
- Safety Characteristics & capability studies
- Control of a process that runs in multiple locations
- Key Performance Index (KPI) in a restaurant!
- Weibull vs. Gaussian on something that is not a durability or life cycle test
- Documenting Reaction to Out Of Control Situations
- When or how often should we update SPC (UCL and LCL) Control Limits? Every month?
- SPC Software Validation Required by our Registrar - How do we do this?
- Complaints Management System - Restaurant chain business - Study case
- SPC for calibration check data? Daily gram scales check - What is acceptable?
- Looking for Process Monitoring /SPC Package - Molded pharma packaging
- U-chart regarding defect count - The operator as subgroup?
- SPC in Spring Brakes - Measuring Angles - What do I need to do?
- Help on identifying the correct statistical tool - Defects vs. Total products