Up to Three Standard Deviations Above or Below the Centerline

question 44

Multiple Choice

Up to three standard deviations above or below the centerline is the amount of variation that statistical process control allows for:

• A) Type I errors.
• B) about 95.5% variation.
• C) natural variation.
• D) all types of variation.
• E) assignable variation.

---

Definitions:

Hypothesis

A proposed explanation for a phenomenon, made as a starting point for further investigation.

Variables

In research and mathematics, variables are any characteristics, numbers, or quantities that can change or vary from one individual, situation, or experiment to another.

Experimental Manipulation

The deliberate alteration of conditions or variables in an experiment to investigate their effects on behavior or outcomes.

IQ Differences

Refers to the variation in intelligence quotient scores among individuals, indicating differences in cognitive abilities.