Joe Geologist Discovers a Vein Made Up Primarily of Quartz

question 47

Essay

Joe Geologist discovers a vein made up primarily of quartz but also containing significant amounts of pyrite as well as chalcopyrite. He knows better than to fall for fool's gold, and decides to ignore the vein. Did he make the right decision? Explain.

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Definitions:

Standard Score

A score that has been transformed to fit a normal distribution, usually with a mean of 100 and a standard deviation of 15.

National Mean

The average score or value derived from a specific set of data collected across a nation.

Standard Deviation

The statistical metric that calculates the dispersion or spread of data points in a dataset around the average value.

Raw Score

An untreated score before manipulation or processing to make it a standard score, as must be done for all norm-referenced tests. Raw scores alone tell us little, if anything, about how a person has done on a test. We must take an individual’s raw score and do something to it to give it meaning.