Math

Question Which rr-value is not possible? A) 0.5, B) 1.2, C) -0.1, D) -0.75

Studdy Solution

STEP 1

Assumptions
1. The variable rr represents a value that is subject to certain conditions.
2. The conditions for rr are not explicitly stated, but since the options include both positive and negative values, we can assume rr could be any real number.
3. However, if rr is meant to represent a correlation coefficient, then it must be within the range 1r1-1 \leq r \leq 1.

STEP 2

Given that rr could be a correlation coefficient, we need to check each option to see if it falls within the acceptable range for correlation coefficients.

STEP 3

Check option A: r=0.5r = 0.5
10.51-1 \leq 0.5 \leq 1
This value is within the range, so it is a possible rr-value.

STEP 4

Check option B: r=1.2r = 1.2
11.21-1 \leq 1.2 \leq 1
This value is not within the range, so it is not a possible rr-value.

STEP 5

Check option C: r=0.1r = -0.1
10.11-1 \leq -0.1 \leq 1
This value is within the range, so it is a possible rr-value.

STEP 6

Check option D: r=0.75r = -0.75
10.751-1 \leq -0.75 \leq 1
This value is within the range, so it is a possible rr-value.

STEP 7

Based on the checks in the previous steps, option B is not a possible rr-value because it does not fall within the range 1r1-1 \leq r \leq 1.
The answer is B. 1.2.

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