Random Assignment to Either the Control or Experimental Group Is

question 140

Multiple Choice

Random assignment to either the control or experimental group is an important aspect of experimental procedures.Why is random assignment used?

• A)to gather a representative sample of participants
• B)to equate the experimental and control groups
• C)to ensure that cohort effects are minimized
• D)to ensure that the independent variable will be reliable and valid

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Definitions:

Arterial Blood Pressure

The force exerted by circulating blood upon the walls of the arteries.

Breath Sounds

The sounds made by air as it moves through the respiratory system, which are auscultated with a stethoscope by a healthcare provider during a physical examination.

ECG

Electrocardiogram, a test that measures the electrical activity of the heart to identify various heart conditions.

Electrical Activity

The movement of electrically charged particles, such as ions, which is fundamental to many biological processes, including nerve conduction and muscle contraction.