Question

which of the following relationships represents a positive correlation between two variables? as the amount of water a plant receives increases, the growth rate of the plant increases. as the number of hours a person exercises decreases, the weight of that person increases. as a students class attendance decreases, the students overall grade remains the same. as the number of miles driven increases, the amount of gasoline in the tank decreases.

Explanation:

A positive correlation means that as one variable increases, the other variable also increases.

• In the first option, as the amount of water (one variable) increases, the growth rate of the plant (another variable) increases. This shows a positive correlation.
• In the second option, as the number of hours a person exercises (one variable) decreases, the weight of that person (another variable) increases. This is a negative correlation.
• In the third option, as a student's class attendance (one variable) decreases, the student's overall grade (another variable) remains the same. There is no correlation here.
• In the fourth option, as the number of miles driven (one variable) increases, the amount of gasoline in the tank (another variable) decreases. This is a negative correlation.

Answer:

As the amount of water a plant receives increases, the growth rate of the plant increases.