A Rank Correlation Coefficient Is to Be Calculated for a Collection

question 11

Multiple Choice

A rank correlation coefficient is to be calculated for a collection of paired data. lie between -10 and 10. Which of the following could affect the value of the rank correlation coefficient?
I: Multiplying every value of one variable by 3
II: Interchanging the two variables
III: Adding 2 to each value of one variable
IV: Replacing every value of one variable by its absolute value

• A) I and IV
• B) III
• C) I
• D) IV

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Definitions:

Conduit Box

An enclosure attached to electric motors or other equipment that allows for the connection and protection of wiring.

Cogging Torque

The resistance to movement that occurs in a motor due to magnetic interactions when the rotor is in certain positions.

Rotor

The rotating part of an electrical machine, such as a motor or generator, that works with the stator to induce motion or generate electricity.

Jerks

In mechanical terms, jerks refer to the rate of change of acceleration; a sudden jolt or change in speed, often experienced in machines and vehicles.