Answer:
D
Step-by-step explanation:
The correlation coefficient, r value, measures the strength and direction of 2 variables in a scatterplot. It ranges from +1 to -1.
+1 means a perfect positive correlation
-1 means a perfect negative correlation
0 means there is no correlation
Also,
a value close to 0.7 would signify a strong relationship (whether positive or negative)
a value close to 0.5 indicates a moderate relationship
a value close to 0.3 indicates a weak relationship
Now, the question says the r value is 0.315
THis is POSITIVE
Also, this is a "weak" relationship
Thus, we can say:
It has weak correlation, or answer choice D
D is right.
