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OpenStudy (anonymous):
Suppose you have a normally distributed set of data pertaining to a standardized test. The mean score is 500 and the standard deviation is 100. What is the z-score of 225 point score?
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ganeshie8 (ganeshie8):
\(\large zscore = \frac{observation~~ -~~ mean}{standard~~ deviation}\)
ganeshie8 (ganeshie8):
plugin the given values
OpenStudy (anonymous):
Ok Thanks
ganeshie8 (ganeshie8):
wat did u get for zscore ha ?
ganeshie8 (ganeshie8):
\(\large zscore = \frac{225~~ -~~ 500}{100}\)
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OpenStudy (anonymous):
-2.75
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