Which of the following pairs of variables is most likely to show a positive correlation?
A) number of classes a senior has failed and number of job offers he or she receives
B) a car's maximum speed and its gas mileage (miles per gallon)
C) TV screen size (diagonal) in inches and its cost (in dollars)
D) time since removing a dish from the stove and the dish's temperature.

Question

Quizplus · Accepted Answer

Typically, the larger the TV screen size, the higher the cost. This suggests a positive correlation between the two variables. In option A, failing classes would likely lead to fewer job offers, indicating a negative correlation. In option B, a car's maximum speed and gas mileage would typically have a negative correlation - the faster the car goes, the lower its gas mileage. In option D, as time passes after removing a dish from the stove, the temperature of the dish would decrease, indicating a negative correlation.

Which of the Following Pairs of Variables Is Most Likely