A study of several cities shows a positive correlation between the percent of people who swim outdoors and the number of barbecue grills sold.

WILL FAN AND MEDAL
Which statement is most likely true?

The correlation is due to a third variable: cost of milk.
The correlation is due to a third variable: weather.
Swimming makes people hungry for a barbecue.
Barbecuing makes people want to swim.

Question

A study of several cities shows a positive correlation between the percent of people who swim outdoors and the number of barbecue grills sold.

WILL FAN AND MEDAL
Which statement is most likely true? 

       The correlation is due to a third variable: cost of milk.
       The correlation is due to a third variable: weather.
       Swimming makes people hungry for a barbecue.
       Barbecuing makes people want to swim.

anonymous · Answer

B because weather effects swimming and barbeques.