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Posts tagged "variances"

Posts Tagged ‘variances’

A Simple Model of a Variance Stable Process

Most descriptions of equipment and/or process lifetimes assume that failure rates follow a three-period curve pattern where failures/errors decrease during the improvement period, remain relatively constant and at their lowest levels during the normal operating period, and increase during the wearout period.

Avoid Two Common Mistakes in Measurement System Analysis

Learn two of the common mistakes made during measurement system analysis and how to avoid them.

Use Earned Value Management for Process Improvement

To identify issues in a process without losing time by deep diving into the complete process, use earned value management (EVM) to measure cost and schedule compared to budget.

What You May Not Know About Adding Variances

Six Sigma instructors tell their students add variances, not standard deviations. What students may not have learned is that this additive property relies on the linearity of the transfer function.



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