Question
Which of the following statements about the correlation coefficient r are true?
I. It is not affected by changes in the measurement units of the variables.
II. It is not affected by which variable is called x and which is called y.
III. It is not affected by extreme values.
I only
II and III only
III only
I and II only
I, II, and III
I. It is not affected by changes in the measurement units of the variables.
II. It is not affected by which variable is called x and which is called y.
III. It is not affected by extreme values.
I only
II and III only
III only
I and II only
I, II, and III
Answers
I would say I and II only.
III only
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