Which of these r-values represents the weakest correlation?

The correct option is C.

Step-by-step explanation:

r-values represents correlation between two variables. The r-value lies from -1 to 1.

If r=-1 or close to -1, then it represents strong negative correlation.

If -1 < r < 0 or close to -0.5, then it represents weak negative correlation.

If r=0 or near to 0, then it represents no correlation.

If 0 < r < 1 or close to 0.5, then it represents weak positive correlation.

If r=1 or close to 1, then it represents strong positive correlation.

The given r values are -0.75, -0.55, -0.15 and -0.35.

From these r-values, -0.15 represents the weakest correlation because it is nearest to 0.

Therefore the correct option is C.

C

Because the closer it is to 0 the weaker the Correlation

1/4 and 8/3 because:

the reciprocal if 4 is 1/4 because 4 is used as 4/1 and the opposite of that is 1/4. the opposite of 3/8 is 8/3 so that is the answer.