Which Statement About Re-Expressing Data Is True

question 11

Multiple Choice

Which statement about re-expressing data is true?
I. Unimodal distributions that are skewed to the left can be made more symmetric by taking the square root of the variable.
II. A curve that is descending as the explanatory variable increases may be straightened by taking a logarithm of the response variable.
III. One goal of re-expression may be to make the variability of the response variable more uniform.

• A) I only
• B) II only
• C) III only
• D) II and III
• E) I, II and III

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Definitions:

Reciprocity Principle

This is sometimes called the reciprocity norm, or ‘the law of doing unto others what they do to you’. It can refer to an attempt to gain compliance by first doing someone a favour, or to mutual aggression, or to mutual attraction.

Self-Disclosure

The act of revealing personal or private information about oneself to others, which can facilitate intimacy and trust in relationships.

Intimate Knowledge

Deep, often personal understanding of a subject or another individual.

Pre-Operative

Referring to the period or phase before a surgical procedure.