The number of snow boots purchased at a store is positively
correlated with each of the following
variables. A change in which of the
variables most likely causes a change
in the number of snow boots
purchased?
Answer Choices:
The number of mittens purchased at
the store
The amount of snowfall in the city in
which the store is located
The number of snowmen built by
customers of the store
The amount of time it took
employees to drive to the store