Question

which of these is not a possible r - value?
a. 0.2
b. 1.75
c. -0.1
d. -0.5

Explanation:

Step1: Recall the range of r - value

The correlation coefficient \(r\) has a range of \(- 1\leq r\leq1\).

Step2: Check each option

• Option A: \(0.2\) is between \(-1\) and \(1\).
• Option B: \(1.75>1\), so it is not in the range of possible \(r\) - values.
• Option C: \(-0.1\) is between \(-1\) and \(1\).
• Option D: \(-0.5\) is between \(-1\) and \(1\).

Answer:

B. 1.75