Joshua Obtained a Score of 550 on the SATs (M=500

question 45

Multiple Choice

Joshua obtained a score of 550 on the SATs (M=500, SD=100) and a score of 95 on the WAIS-III (M=100, SD=15) . On which test did he do better?

• A) WAIS-III
• B) SATs
• C) He performed equally well on both tests.
• D) This cannot be determined.

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Definitions:

Variability

Variability is a statistical concept that describes the extent to which data points in a data set differ from each other and from the average or mean value of the set.

Measure

A tool or instrument used to quantitatively assess or determine the extent, dimensions, quantity, or capacity of something.

Manipulation

The act of controlling or influencing a person, situation, or system often in a skillful manner.

Bar Graph

A visual presentation that uses bars to depict frequencies of responses, percentages, or means in two or more groups.