Imagine that you are interested in the relationship between exercise and mood. You do a survey of 10 randomly selected college students and ask them to report how many minutes they exercise, on average, per day. You also asked them to rate their level of depression using a continuous scale. You run a regression analysis using the data you've collected to see whether depressed mood can be estimated based on how much individuals exercised. What is/are the predicted variable/s?
a) Exercise
b) Neither
c) Mood
d) Both exercise and mood