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In the checksums, you validated that the average SAT score for all of the records is 1,059.07. When we work with the data more rigorously,
In the checksums, you validated that the average SAT score for all of the records is 1,059.07. When we work with the data more rigorously, several tests will require us to transform NULL values. If you were to transform the NULL SAT values into 0.
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If we were to transform the NULL SAT values into 0 the average SAT score would decrease from the original value of 105907 This is because a zero value ...
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Understanding Business Statistics
Authors: Stacey Jones, Tim Bergquist, Ned Freed
1st edition
1118145259, 978-1118145258
