Clara Examines the Number of Traumatic Head Injuries That Occurred

question 27

Multiple Choice

Clara examines the number of traumatic head injuries that occurred in California for five years before and after the passage of a law that made it mandatory for riders to wear a helmet. Clara's research design would be classified as a(n) :

• A)nonequivalent control group pretest-posttest design.
• B)nonequivalent control group design.
• C)control series design.
• D)interrupted time series design.

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Definitions:

Predictor Variable

A variable used in-statistical models to predict or estimate the value of an outcome variable.

P Predictor

A variable in a statistical model that is used to predict the outcome of a dependent variable based on its relationship with the predictor.

Regression Equation

An equation in mathematics employed to forecast the value of a dependent variable using one or more independent variables.

Unit Increase

A single increment or step up in quantity, size, or number in a given context.