Answer:
Option A - Graph A
Step-by-step explanation:
Given : Scatter plot as x increases, y decreases; r= -0.87.
To find : Which graph best describes this?
Solution :
The correlation r measures the strength of the linear relationship
between two quantitative variables.
r<0 indicate a negative association.
If y decreases as x increases, there is a negative slope.
As Option A and D are negative slope.
In Option D The scatter plot is when r=-0.5 as points scatter a lot.
In Option A the data points correlate relatively well. The closer the decimal is to 1 or -1, the better.
Therefore, Option A is correct.
As x increases, y decreases; r= -0.87 - The graph A.
