Which Is Not a Rule of Thumb to Indicate an Out-Of-Control

question 85

Multiple Choice

Which is not a rule of thumb to indicate an out-of-control process on the chart?

• A) Single point outside three sigma
• B) Three of four successive points outside two sigma on the same side of the centerline
• C) Four of five successive points outside one sigma on the same side of the centerline
• D) Nine successive points on the same side of the centerline

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Definitions:

Effect Size

A numerical measure that quantifies the size of a phenomenon or the intensity of the connection between variables.

Standard Error

A statistical term that measures the accuracy with which a sample distribution represents a population by using standard deviation.

Population Standard Deviation

A measure of the spread of scores within a set of data, calculated as the square root of the variance for the entire population.

Sample Size

The number of individuals or observations included in a sample drawn from a larger population for the purpose of statistical analysis.