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Chapter 13 - Measure - Coggle Diagram
Chapter 13 - Measure
Failure Modes and Effect Analysis
tool for any phase from define to analyze, but used often in measure phase to identify risk priorities for various inputs and errors within the process
more detailed information about inputs and possible associated fail-points than tools in define phase
FMEA Spreadsheet to include the following headers: Column 1-9 completed during the measure phase - Process Steps, Potential Failure, Potential Failure Effect, SEV, Potential cause of failure, OCC, Current monitor/control, DET, RPN
Column 10-15 would happen in the improve phase - Recommended changes/ actions, who and when?, action completed, SEV, DET and RPN.
Collecting Data
Continuous - quantitative; measured in units
measured in graphs and box plots
provides more information than discrete
more time consuming
more precise than discrete
lets teams remove variations and errors inherent in estimation and rounding
Interval - more detailed form of data; numeric value in a logical order; quantitative and more flexible when it comes to statistical analysis
Discrete - categorical in nature; attribute or qualitative.
Ordinal - higher form of data collection; still uses numbers and categories but, number has meaning (pain scale)
nominal - lowest data collection level; simply involves applying number labels
displayed via Pareto charts, pie charts and bar charts
binary/attribute - easiest to collect
Measurement Systems Analysis - (MSA) applies scientific principles to analyze variations
Creating Accuracy - coming as close as possible to a defined target
Addressing Resolution - measuring at the correct resolution ensures measurement system can detect change in data
Errors of Linearity - measurement systems performs across a range
stability - consistency of measurement over time
Ratio - highest of all data collection - has an absolute zero point; can be both discrete and continuous
Data Samples -
Simple Random
Stratified
Sequential
Samples that aren't random
Baseline Metric - major deliverable coming out of define and measure phase
Run Charts - used to monitor the performance of any variable or process over time.