Determine which set(s) of two variables have a strong positive correlation and explain why this is so in each scenario.
Select all options that demonstrate a strong positive correlation.
☐ A. Temperature and the number of swimming pools sold show a strong positive correlation
because people tend to swim more when it is warmer.
B. Physical activity and percentage of body fat show a strong positive correlation because
people who are physically active tend to have less body fat.
☐ C. Hours spent in the sun and severity of sunburn show a strong positive correlation
because sunburns tend to be more severe after spending more time in the sun.
D. Hours of TV watched and GPA show a strong positive correlation because students
who watch more TV tend to have lower GPAs.