Natural Variations

question 121

Multiple Choice

Natural variations:

• A) are variations that are to be identified and investigated.
• B) are variations that can be traced to a specific cause.
• C) are the same as assignable variations.
• D) lead to occasional false findings that processes are out of control.
• E) play no role in statistical process control.

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Definitions:

Type I Error

The incorrect rejection of a true null hypothesis, also known as a "false positive" finding.

Null Hypothesis

A hypothesis used in statistics that proposes no significant difference or effect, serving as a default position until evidence suggests otherwise.

Test Statistic

A value calculated from sample data during a hypothesis test, used to make a decision about the null hypothesis.