Question

question 9 of 10
which of these is not a possible r value?
a. 0.2
b. -0.1
c. 1.75
d. -0.5

Explanation:

Step1: Recall r-value range

The Pearson correlation coefficient $r$ must satisfy $-1 \leq r \leq 1$.

Step2: Evaluate each option

Check if each value falls within $[-1, 1]$:

• A. $0.2$: $-1 \leq 0.2 \leq 1$, valid
• B. $-0.1$: $-1 \leq -0.1 \leq 1$, valid
• C. $1.75$: $1.75 > 1$, invalid
• D. $-0.5$: $-1 \leq -0.5 \leq 1$, valid

Answer:

C. 1.75