Carla Has Been Asked to Figure Out Last Year's Growth

question 30

Multiple Choice

Carla has been asked to figure out last year's growth rate for the United States. She is using a formula that starts with births,subtracts the number of deaths,and then adds the net migration. What is another name for this formula?

• A)the Pythagorean theorem
• B)the demographic transition theory
• C)the basic demographic equation
• D)the population density model

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Definitions:

True Experimental Design

A research design that includes random assignment of participants to conditions and manipulation of an independent variable to determine its effect on a dependent variable.

Independent Variable

The variable in an experiment that is manipulated or changed by the researcher to observe its effect on the dependent variable.

Dependent Variable

The outcome variable in an experiment or study whose changes are dependent on manipulations made to the independent variable(s).

Type II Error

The error that occurs when a statistical test fails to reject a false null hypothesis—essentially, a false negative.