Which of the following represents a negative correlation?
a) the length of a person's arms over time
b) the water level in a bathtub as it drains over time
c) the amount of time you drive as compared to the distance traveled
d) the total cost of a pizza and the number of toppings you put on it

The answer is letter B, The water level in a bathtub as it drains over time.

Step-by-step explanation:

It is best to learn the meaning of "negative correlation" first.

Correlation- In Mathematics, "correlation" means a measure of the relationship between two variables.

Positive Correlation-  when the values of the variables increase together.

Negative Correlation- when one value of a variable increases while the other variable's value decreases.

*The situation above is asking for a negative correlation, therefore the answer is letter B (The water level in a bathtub as it drains over time).

The variables are: water level and draining time

As the draining time increases, the water level in the bathtub decreases. This is clearly an example of a negative correlation.

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step-by-step explanation: