The Variance of a Group of Scores Is Just Like

question 13

Multiple Choice

The variance of a group of scores is just like the absolute mean deviation except that for the variance:

• A) the absolute value of the differences is used instead of the squared value
• B) the squared value of the differences is used instead of the absolute value
• C) differences are based on the median not on the mean
• D) differences are based on the mean instead of on the median

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Definitions:

Aldopentose

A five-carbon sugar (pentose) that contains an aldehyde group as part of its structure, important in nucleic acids and energy metabolism.

Ketotetrose

A type of monosaccharide with four carbon atoms and a ketone functional group.

Aldotetrose

A four-carbon sugar (tetrose) with an aldehyde group as its carbonyl functional group.

Aldohexose

A six-carbon sugar with an aldehyde group at one end.