In an Experimental Study of the Effects of Exercise on Stress,subjects

question 42

Multiple Choice

In an experimental study of the effects of exercise on stress,subjects are randomly assigned to either the no exercise group or the exercise group.These groups represent the _____ and the _____,respectively.

• A)independent variable; dependent variable
• B)dependent variable; independent variable
• C)control group; experimental group
• D)experimental group; control group

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Definitions:

Algebraic Expression

A combination of numbers, variables, and arithmetic operations that represents a mathematical phrase.

Simplify

The process of making an expression easier to understand by reducing it to its most basic form.

Algebraic Expression

A mathematical phrase combining numbers, variables, and operation symbols to represent a specific value or set of values.

Evaluate

To compute or find the value of a mathematical expression or function through substitution of known values.