Asked by Jessica Corner on May 10, 2024
Verified
A problem with designing an experiment with only two levels of the independent variable is that:
A) only one dependent variable can be used with this design.
B) curvilinear relationships between variables cannot be detected.
C) this design is more susceptible to confounds than other designs.
D) the results cannot be generalized.
Curvilinear Relationships
Relationships between two variables where the strength and/or direction of the association changes over the range of the variable's value, forming a curve rather than a straight line.
Confounds
Variables that could potentially contaminate or influence the outcome of an experiment, making it hard to interpret the effects of the primary variables of interest.
- Determine methods for identifying nonlinear correlations among variables.
Verified Answer
JC
James ContehMay 14, 2024
Final Answer :
B
Explanation :
With only two levels of the independent variable, it is impossible to test for curvilinear relationships between the variables. Curvilinear relationships require at least three levels of the independent variable to be tested accurately. However, this design is not necessarily more susceptible to confounds and its results can still be generalized. The use of only one dependent variable is also not necessarily a problem.
Learning Objectives
- Determine methods for identifying nonlinear correlations among variables.