Which Is Important in Designing a Good Experiment

question 599

Multiple Choice

Which is important in designing a good experiment?
I. Randomization in assigning subjects to treatments.
II. Control of potentially confounding variables.
III. Replication of the experiment on a sufficient number of subjects.

• A) II and III
• B) I and III
• C) I and II
• D) I only
• E) I, II, and III

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Definitions:

Supplemental Coolant Heater

An auxiliary heater used in vehicles to aid in heating the engine coolant, providing faster warm-ups in cold weather.

Diesel Fuel

A type of liquid fuel used in diesel engines, formulated from the distillation of petroleum.

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The physical neural network of a CAN 2.0 network bus using J1939 protocols consisting of a twisted two-wire pair, SA stubs, and two terminating resistors. Used as the primary powertrain bus even in systems using multiple auxiliary buses. Theoretically capable of speeds of up to 1 Mb/s but usually maxed out at 500 Kb/s in current applications.