Parameter vs. statistic Describe the difference between parameter and statistic. Standard deviation Compute the standard deviation for both population and sample, and explain how it relates to statistical inference. Confidence level Define confidence level and explain how it relates to statistical inference. Describe the difference between control limits and specification limits, and know when and on what charts to use them. Describe the characteristics associated with a state of statistical control.
Rational subgroups Define the principle of rational subgroups.
Variables charts Identify, select, construct, and interpret and R and and s charts. Attributes charts Identify, select, construct, and interpret p, np, u, and c charts. Interpret various control chart patterns and distinguish between common cause and special cause variation, using rules for determining statistical control. Measurement Tools Describe, select, and understand the use of the following types of tools, and evaluate measurement results to determine conformance to specifications. Calibration Procedures Gage traceability Identify the connection between different levels of standards such as primary, secondary, working, etc.