The amount of time spent studying and your grade point average.
Hint
as time spent studying increase, GPA increases
Answer
positively correlated
Example 2
Shoe size and the number of pairs of shoes one owns.
Hint
as shoe size increases, what happens to pairs of shoes?
Answer
not correlated
Example 3
Frankie and Lucy are planning on selling a new iPhone app. This is a scatter plot estimation of how many apps they can sell at different prices. A line of best fit is drawn in for you.
Answer
Example 4
What kind of correlation is shown in this graph (positive, negative, or no correlation)?
Hint
as price increases, quantity sold decreases
Answer
negative correlation
Example 5
If Frankie and Lucy price the application at $2.50, how many can they expect to sell, and how much money would they get from the sales?
Hint
multiply the quantity sold by the price
Answer
47,000 × $2.50 = $117,500
Example 6
If they price the application at $3.00, how many can they expect to sell, and how much money would they get from the sales?
