Question

which of these r - values represents the strongest correlation?
a. - 0.6
b. - 0.8
c. - 0.5
d. - 0.7

Explanation:

Step1: Recall the rule for correlation strength

The strength of a correlation is determined by the absolute value of the \( r \)-value. The closer the absolute value is to \( 1 \), the stronger the correlation.

Step2: Calculate the absolute values

For option A: \( | - 0.6|=0.6 \)
For option B: \( | - 0.8|=0.8 \)
For option C: \( | - 0.5|=0.5 \)
For option D: \( | - 0.7|=0.7 \)

Step3: Compare the absolute values

Since \( 0.8>0.7 > 0.6>0.5 \)

Answer:

B. - 0.8