If learning complex math, arithmetic, or statistics isn’t needed then why introduce Statistical Process Control or SPC for short?

SPC simply put is a quality control method employing statistical methods. Statistical Process Control is applied in order to monitor and control a process. Monitoring and controlling the process ensures that it operates at its full potential and provides many answers to many questions such as:

Are all the units coming off the line the same?

If everyone in the room measures the same unit will we all get the same answer?

If we measure a unit, make an improvement to the process, then measure another unit and see an improvement, has the process actually improved or is it a result of variability in the process

Should we measure a single unit to make change decisions or to validate product performance?

Use of Equal Variance Assumption with ANOVA The equal variance assumption is important in statistics […]

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