Which of the Following Describes Standard Deviation

question 98

Multiple Choice

Which of the following describes standard deviation?

• A) It is the average of the greatest and least values in the data set.
• B) It is the square root of the variance.
• C) It is the difference between the first and third quartiles of a data set.
• D) It is the average of the squared deviations of the observations from the mean.

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Definitions:

Compensating Fifth Wheel

A fifth wheel designed to articulate fore and aft, and side to side. Used to limit trailer torque effect transfer; the Holland Kompensator would be an example.

Aluminum Frame

An aluminum frame refers to the structural framework of a vehicle or equipment made from aluminum, known for being lightweight yet strong.

Pintle Hook

The standard coupling mechanism used in truck full-trailers. The function of a pintle hook is to engage to the drawbar eye, which itself is bolted to the tongue or drawbar assembly of the trailer.

Trailer Upper Coupler

The front part of a trailer that connects to the tractor or towing vehicle, typically encompassing the kingpin and associated mechanisms.