Which of these r-value represents the strongest correlation - 0.5 - 0.7 - 0.4 - 0.6

Answer: - 0.7

Step-by-step explanation:

We know that when the absolute value of correlation coefficient 'r' is nearest to 1 then then we say that it represents the strongest correlation.

From the given options, the absolute value of - 0.5=0.5

The absolute value of - 0.7=0.7

The absolute value of - 0.4=0.4

The absolute value of - 0.6=0.6

We can see that the absolute value of - 0.7 i. e. 0.7 is nearest to 1.

Therefore, the value of r = -0.7 represents the strongest correlation.