Which of the Following Is a Reason Why a Researcher

question 42

Multiple Choice

Which of the following is a reason why a researcher may design an experiment with more than two levels of an independent variable?

• A)A design with only two levels of an independent variable cannot provide much information about the exact form of the relationship between the independent and dependent variables.
• B)When there are only two levels of an independent variable, the relationship between the independent and dependent variables cannot be described with a straight line.
• C)An experiment with only two levels of one independent variable always tends to show that there is a positive relationship between the independent and dependent variables.
• D)An experimental design with only two levels of the independent variable can only detect curvilinear relationships between the independent and dependent variables.