The Standard Deviation Would Be an Appropriate Measure of Variability

question 25

Multiple Choice

The standard deviation would be an appropriate measure of variability only if the variable is measured on:

• A)nominal and ratio scales.
• B)ordinal and nominal scales.
• C)interval and ratio scales.
• D)optimal and interval scales.

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Definitions:

Like Charges

Charges that are the same, either both positive or both negative, which repel each other according to Coulomb's law.

Attraction

The force that draws two objects toward each other, such as the electromagnetic force between oppositely charged particles or between magnetic poles.

Repulsion

A force that pushes objects away from each other, often used in the context of magnetic fields where like poles repel.

Direction

In context to electrical and magnetic fields, it refers to the path along which something moves, points, or faces.