Question

unit 7 - slope and association
would you expect a scatterplot comparing \speed of a car\ and \time it takes to drive 10 miles\ to show a positive association, a negative association, or no association?
positive association
negative association
no association

Explanation:

Step1: Recall speed-time relationship

The core formula is $ \text{time} = \frac{\text{distance}}{\text{speed}} $

Step2: Analyze variable change

For fixed distance (10 miles), as speed increases, time decreases.

Step3: Define association type

Inverse change means negative association.

Answer:

Negative Association