Three samples, regarding the ages of professors of a university, are selected ra

Question

Three samples, regarding the ages of professors of a university, are selected randomly as shown below:

Sample A: 27, 35, 44, 48, 39 Sample

B: 30, 75, 44, 45, 38 Sample

C: 32, 35, 42, 60, 65

How is the value of the correlation coefficient r affected if each X value is multiplied by 4?______

A. The value of r does not change

B. The value of r will be four times larger than the original r

C. cannot be determined from the given information

D. The value of r will be four times smaller than the original r

Explanation / Answer

Option A is Correct

Correlation Coefficient value does not change if each X value is multiplied by 4 or divided by 4

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