In a psychophysical experiment, Dr. Enderby is systematically varying the amplitude of a sound wave and asking observers to indicate how loud the sound seems. In this study, amplitude is a(n) _____ variable. Dr. Enderby should display the results of the study using a _____ graph.

Question

Quizplus · Accepted Answer

In this experiment, the amplitude of the sound wave is the independent variable because it is being manipulated by Dr. Enderby to observe its effect on the perceived loudness (the dependent variable). A line graph is appropriate for displaying the results as it can effectively show the relationship between the varying amplitudes (independent variable) and the perceived loudness (dependent variable), which is likely to be a continuous rather than a categorical relationship.

In a Psychophysical Experiment, Dr