SOLUTION: What is the difference between z scores and area scores? What is each scores relationship to the graph of the standard normal distribution and what are the possible sign values for

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Question 248577: What is the difference between z scores and area scores? What is each scores relationship to the graph of the standard normal distribution and what are the possible sign values for each score?
Answer by stanbon(75887) About Me  (Show Source):
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What is the difference between z scores and area scores? What is each scores relationship to the graph of the standard normal distribution and what are the possible sign values for each score?
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The z-score of a data value is the distance measured in
standard deviations that data value is from the mean.
The z-value is negative if the distance is to the left
of the mean. The z-value is positive if the distance
is to the right of the mean.
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An area score is the percent of a population that
falls between a lower z-value and a higher z-value.
It is a measure of the normalized area above the z-
interval and below a normal curve. Area scores are
always positive.
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Cheers,
Stan H.