We Are Investigating the Relationship Among Three Variables

question 294

Multiple Choice

We are investigating the relationship among three variables.We have graphed two of them.Suppose that the variable that is not measured on the x-axis or the y-axis changes.Then,there is

• A) a movement along the plotted curve.
• B) a shift in the plotted curve.
• C) no impact on the plotted curve because the variable is not measured on either of the axes.
• D) an omitted variable.
• E) a violation of the absence of trend assumption.

---

Definitions:

Single Range

This term could refer to devices or instruments that have only one scale or measurement range, limiting their versatility across different measurement values.

Ayrton Shunt

An ammeter shunt that permits multiple range values.

Current Transformer

A transformer used for metering alternating current. Current transformers generally have a standard output current value of 5 A at rated primary current.

Moving Vane

A mechanical component in some measurement devices that moves in response to an external physical quantity, such as fluid flow or electrical current.