You have gathered data from a random sample of 300 high school
students in order to better understand how the amount of texting
engaged in per day (in minutes) relates to the amount of time spent
exercising per day (in minutes). Your ultimate goal is to
construct a regression equation to predict amount of time spent
exercising per day based on amount of texting engaged in per
day. If this is your goal, which variable should you put on
the horizontal axis (or x-axis) of a scatterplot of
this data?
Amount of time spent exercising per day, because it is the
explanatory variable.
When conducting a regression analysis, it makes no difference
which variable is on which axis of the scatterplot.
Amount of time spent exercising per day, because it is the
response variable.
Amount of texting engaged in per day, because it is the response
variable.
Amount of texting engaged in per day, because it is the
explanatory variable.