The values of two different variables are related to each other such that an increase in the value of the first variable is accompanied by a decrease in the value of the second variable. If the variables are perfectly correlated, their correlation coefficient will be equal to
The correlation coefficient measures the strength and direction of a linear relationship between two variables. A correlation coefficient of -1.0 indicates a perfect negative correlation, meaning that as one variable increases, the other decreases.
Moore, D.S., McCabe, G.P., & Craig, B.A. (2017). Introduction to the Practice of Statistics. W.H. Freeman.
Montgomery, D.C. (2009). Introduction to Statistical Quality Control. Wiley.
A failure node and effects analysis (FMEA) should be classified in what cost of quality category?
Failure Mode and Effects Analysis (FMEA) is a preventive action methodology used to identify and mitigate potential failures before they occur.
Appraisal:
Involves measuring and evaluating products to ensure they meet quality standards (e.g., inspection and testing).
Prevention:
Involves activities designed to prevent defects from occurring.
FMEA falls under prevention as it proactively identifies potential failure modes and implements measures to mitigate them.
Control:
Involves monitoring processes to maintain quality, but does not directly relate to preventive analysis like FMEA.
Inspection:
Involves examining products or components to ensure they meet specifications, not preventive by nature.
Which of the following quantitative methods does NOT apply to the assessment of actual system/component reliability?
A system was designed with 3 capacitors. When the system is first activated all capacitors are operating. The system continues to operate as long as at least 1 capacitor is operating. This is an example of
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