Question

question 9 of 25
which of the following is not a possible r - value?
a. 0.3
b. - 1.3
c. 0.6
d. - 0.6

Explanation:

Step1: Recall the range of \( r - value \)

The correlation coefficient \( r \) has a range \( - 1\leqslant r\leqslant1 \).

Step2: Check each option

• Option A: \( 0.3 \), since \( -1\leqslant0.3\leqslant1 \), it is a possible \( r - value \).
• Option B: \( - 1.3 \), since \( -1.3\lt - 1 \), it is not a possible \( r - value \).
• Option C: \( 0.6 \), since \( -1\leqslant0.6\leqslant1 \), it is a possible \( r - value \).
• Option D: \( -0.6 \), since \( -1\leqslant - 0.6\leqslant1 \), it is a possible \( r - value \).

Answer:

B. -1.3